Patent Description:
<CIT> relates to an operation knob and a display device in which same is used. <CIT> relates to a portable electronic device and a button assembly thereof. <CIT> relates to a rotary knob-integrated temperature-display module. <CIT> relates to an intelligent thermostat in a smart-home environment which includes a rotating cover fastened to a backplate.

Various embodiments are described related to a smart home device. In some embodiments, a smart home device is described as in claims <NUM>-<NUM>.

In another embodiment, a boiler control system is described as in claim <NUM>.

An actuator device (also referred to as an "actuator") may be connected with control wires. Such control wires may control operation of various components, such as: a furnace; a boiler; a fan; an air conditioner; and/or a multi-stage heating or cooling system. The actuator may open and close circuits in order to control operation of components of the HVAC system. Due to the actuator being directly connected with control wires, the actuator may be located in a hidden, concealed, or inconvenient location, such as in a utility closet, where the HVAC control wires are exposed. A user may have a thermostat and a movable stand device (also referred to as a "stand") that can be connected to a power source near a location where the user desires the thermostat to be located. The user may typically have the thermostat located in a convenient location in a room frequently used by occupants of the structure. The stand is configured to connect with a thermostat and provide the thermostat with power and, possibly, temperature measurements. The thermostat wirelessly communicates with the actuator device in order to control the components of the HVAC system. Thus, the actuator can be directly connected to the control wires and the thermostat can be conveniently located to ensure that the temperature of a desired location is monitored accurately and to enable a user to easily access controls to control the HVAC. The thermostat may receive and implement temperature set-points provided by a user. The thermostat may further learn and/or receive a setpoint schedule to be implemented daily or on certain days of the week. The thermostat may communicate with a remote cloud-based server to provide users with various services via end-user computerized devices, such as a smartphone, desktop, or tablet computer. Although the above has referred to an actuator for use in a HVAC system, this aspect and the other features described herein are not limited to HVAC systems and may be applied to other control systems that may be installed in a home, office, or other location, such as a door entry system, an alarm system, an irrigation system or other similar control systems. Generally the actuator device is configured to control functions of the control system and may be located where the control wires for the control system are exposed. In an example arrangement, the system may additional comprises a remote device, such as a remote control device or a remote sensor or a remote input device, which remote device may include a door bell, camera, temperature sensor, smoke detector, carbon monoxide detectors, home assistants or other similar devices may located in a convenient location (e.g. in a room, within a building, outside of a building, on an entry way) and may wirelessly communicate with the actuator device in order to control the components of the control system. In some implementations, the remote device may be connected to a stand which is configured to provide power to the remote device. Thus, the actuator can be directly connected to the control wires whilst the remote device can be conveniently located to enable a user to easily access controls to control the control system via the actuator.

Embodiments detailed herein are focused on various aspects of the actuator and stand. Such aspects can improve the functionality, aesthetics, sizing characteristics (e.g., allow the device to be thinner or smaller), and/or manufacturability of the actuator and/or the stand. It is to be appreciated that while one or more embodiments are described further herein in the context of a typical HVAC system used in a residential home, such as a single-family residential home, the scope of the present teachings is defined by the claims. More generally, intelligent thermostat systems according to one or more of the embodiments are applicable for a wide variety of enclosures having one or more HVAC systems including, without limitation, duplexes, townhomes, multi-unit apartment buildings, hotels, retail stores, office buildings, and industrial buildings. Further, it is to be appreciated that while the terms user, customer, installer, homeowner, occupant, guest, tenant, landlord, repair person, and/or the like may be used to refer to the person or persons who are interacting with the thermostat or other device or user interface in the context of one or more scenarios described herein, these references are by no means to be considered as limiting the scope of the present teachings as defined by the claims with respect to the person or persons who are performing such actions.

It is to be appreciated that "smart home environments" may refer to smart environments for homes such as a single-family house, but the scope of the present teachings is defined by the claims, the present teachings being likewise applicable, without limitation, to duplexes, townhomes, multi-unit apartment buildings, hotels, retail stores, office buildings, industrial buildings, and more generally any living space or work space having one or more smart hazard detectors.

While embodiments detailed herein are focused on actuators or thermostats connected to stands, it should be understood that the embodiments detailed herein may be applicable to other smart home devices and/or sensor devices. For instance, aspects of the detailed actuators and/or stands may be applied to thermostats, smoke detectors, carbon monoxide detectors, doorbells, home assistants, video cameras, remote temperature sensors, or other smart home devices that may be installed in a home, office, or other location. A smart home device is a device operable as a control device and/or a sensor device and/or a user input device. Thus, the smart home device may be an actuator as discussed herein or a thermostat as discussed herein. The smart home device may also include, smoke detectors, carbon monoxide detectors, doorbells, home assistants, video cameras, remote temperature sensors, or other similar devices.

<FIG> illustrates an embodiment of a block diagram of an HVAC control system <NUM> that includes a stand and an actuator. Embodiments detailed in this document can represent components of HVAC control system <NUM>. However, as discussed above, one or more of the features described herein may be implemented in other control systems and it is not intended to limit the features described below only to HVAC control systems. HVAC control system <NUM> may include: actuator device <NUM>; mounting plate <NUM>; HVAC system <NUM>; thermostat <NUM>; and stand device <NUM>. Actuator device <NUM> may be attached to a mounting plate <NUM>. Mounting plate <NUM> may facilitate actuator device <NUM> being attached to a surface (e.g., a wall) and allowing HVAC control wires to be routed into a back of actuator device <NUM>. For instance, HVAC control wires may be mounted on a surface of a wall. Mounting plate <NUM> may allow actuator device <NUM> to be secured to the surface of the wall while allowing HVAC control wires to be passed through a rear surface of actuator device <NUM>. Actuator device <NUM> may be connected via multiple HVAC control wires to HVAC system <NUM>.

Actuator device <NUM> may include: display <NUM>, user interface <NUM>, processing system <NUM>, wireless interface <NUM>, and control interface <NUM>. Display <NUM>, which may include one or more LEDs or other forms of lighting elements, may present information to a user. Display <NUM> may include a "dead front" display. A "dead front" display is a display that appears to have a blank display surface (e.g. that is difficult to identify as a display) when the one or more lighting elements are inactive. When active, the lighting elements light the display to make one or more images, such as symbols, text, particular region on the display, visible to the user on the display surface,. User interface <NUM> may include one or more buttons or other forms of user input devices that allow a user to provide input directly to actuator device <NUM>. For instance, user interface <NUM> may be used to engage one or more components of HVAC system <NUM> without a user needing to interact with thermostat <NUM>. Processing system <NUM> may include one or more processors that receive and send information via wireless interface <NUM> to thermostat <NUM>. Processing system <NUM> may receive input from user interface <NUM>, output information that is presented via display <NUM>, and control actuation of HVAC components via control interface <NUM>. Wireless interface <NUM> may use one or more wireless communication protocols, such as: Wi-Fi® (IEEE <NUM>), IEEE <NUM>. <NUM>, Bluetooth®, Z-Wave®, ZigBee®, Thread®, or some other wireless communication protocol to communicate with thermostat <NUM>. Control interface <NUM> may open and close circuits that include HVAC control wires based on instructions from processing system <NUM> to control HVAC system <NUM>.

Thermostat <NUM> may wirelessly communicate with actuator device <NUM>. Thermostat <NUM> may transmit instructions, such as via the use of one of the previously-detailed wireless communication protocols, to instruct actuator device <NUM> to activate or deactivate one or more components of HVAC system <NUM>. Thermostat <NUM> may be removably coupled with stand device <NUM>. Thermostat <NUM> may communicate via a wireless network (e.g., a Wi-Fi WLAN) with Internet <NUM>. Via Internet <NUM>, thermostat <NUM> may transmit data to and receive data from cloud-based server system <NUM>. Cloud-based server system <NUM> may maintain a user account that stores data related to thermostat <NUM> and may permit a user to remotely control and/or view data related to thermostat <NUM>. For example, a user may communicate with cloud-based server system <NUM> to modify a setpoint schedule implemented by thermostat <NUM> or may provide a real time setpoint that is used to immediately control HVAC system <NUM> by thermostat <NUM> (via actuator device <NUM>).

Stand device <NUM> may be placed on a surface and may have a power system <NUM> that powers thermostat <NUM>. Power system <NUM> may be connected with a power outlet (e.g., <NUM> V, <NUM> V) and may output a constant voltage to thermostat <NUM>. Stand device <NUM> may have one or more on-board sensors, such as temperature and/or humidity sensor <NUM>, that provides temperature and/or humidity measurements to thermostat <NUM>.

Further details regarding actuator device <NUM>, mounting plate <NUM>, and stand device <NUM> are provided in relation to <FIG>. <FIG> illustrates an exploded view of a top of an actuator <NUM>. Actuator <NUM> can represent an embodiment of actuator device <NUM> of <FIG>. The following describes an actuator for controlling a HVAC system but, as discussed above, it is not intended to limit the features described herein only to an actuator for a HVAC control system. It will be appreciated that one or more features described herein may be used in actuators for controlling other control systems or in other smart home devices. In the following, the smart home device comprises actuator <NUM> which comprises a chassis assembly that defines one or more compartments and which comprises a plurality of cover fasteners. The actuator <NUM> further comprises a rotatable cover assembly configured to be removably attached with the plurality of cover fasteners to the chassis assembly to at least partially cover a front of the chassis assembly. While the rotatable cover assembly is removably attached with the plurality of cover fasteners, the rotatable cover assembly is configured to be rotatable with respect to the chassis assembly and while the rotatable cover is removably attached with the plurality of cover fasteners, the rotatable cover assembly is configured to block access to the one or more compartments defined by the chassis assembly. The one or more compartments of the chassis assembly are configured to support components of the actuator <NUM>. The components of the actuator <NUM> may include one or more of:: chassis <NUM>; display (not shown in <FIG>); wiring connector cover <NUM>; cover fastener assemblies or fasteners <NUM> (<NUM>-<NUM>, <NUM>-<NUM>) (hereinafter referred to as cover fastener assemblies) for removably attaching the rotatable cover assembly <NUM> to the chassis assembly; light boot assembly <NUM>; battery contact <NUM>; battery spring <NUM>, spring cap <NUM>; battery spring <NUM>; spring cap <NUM>, battery contact <NUM>; support <NUM>; printed circuit board (PCB) <NUM>; backplate <NUM>; batteries <NUM>; light pipe assembly <NUM> (which can include multiple light pipes and the structure to which the light pipes are attached); battery holder tab <NUM>; button <NUM>; and cover leash <NUM>. Rotatable cover assembly <NUM> is designed to be facing away from a surface to which backplate <NUM> is mounted. As such, rotatable cover assembly <NUM>, when removably attached with chassis <NUM> of chassis assembly, may be the component of actuator <NUM> most visible to a user. Rotatable cover assembly <NUM> may be removable by a user, such as by pulling edges of rotatable cover assembly <NUM> to release the rotatable cover assembly from the plurality of cover fastener assemblies. Removing rotatable cover assembly <NUM> can allow a user to access wiring connectors and/or a battery compartment of chassis <NUM>. In other words, with the rotatable cover assembly being removably attached to the chassis assembly, a user can easily access the compartments of the chassis assembly to enable a user to more easily install the smart home device (e.g. make the wiring connections to the device), replace batteries and/or check and/or fix wiring connections once the smart home device has been installed. Further, by rotatable cover assembly <NUM> being rotatable, a user can rotate rotatable cover assembly <NUM> to a desired orientation, which may be desirable for aesthetic reasons. PCB <NUM> may have components such as a wireless interface (e.g., wireless interface <NUM>) and processing system (e.g., processing system <NUM>) mounted to it.

<FIG> illustrates an exploded view of a bottom of actuator <NUM>. <FIG> illustrates a back side of each component of actuator <NUM> as compared to the front side illustrated in <FIG>.

<FIG> illustrates a front view of an embodiment of a rotatable cover assembly <NUM>. <FIG> illustrates a side view of an embodiment of the rotatable cover assembly <NUM>. <FIG> illustrates a back view of an embodiment of a rotatable cover assembly <NUM>. Rotatable cover assembly <NUM> can represent an embodiment of rotatable cover assembly <NUM>. Rotatable cover assembly comprises a cover body <NUM>. The rotatable cover assembly <NUM> may be circular. <FIG>, which represents a top or front surface of rotatable cover assembly <NUM> (e.g. front surface of cover body <NUM>), may be fully or partially covered in a fabric, cloth, or screening. For instance, a knit fabric may be used as an outer layer of rotatable cover assembly <NUM>. It should be understood that this fabric or screening pattern may be stretched over the entirety of the front or top surface illustrated in <FIG>. Fabric <NUM>, which may cover an entire front surface of rotatable cover assembly <NUM>, can have a visible pattern or texture. This visible pattern or texture may be more aesthetically pleasing to persons if aligned in a particular orientation. For example, if the visible pattern exhibits a series of parallel lines or a grid, a person my desire to have these lines or the grid aligned either parallel or perpendicular to features of a region in which actuator <NUM> is installed. For example, such lines or a grid may be desired to be parallel to a joint where walls meet, the ceiling meets a wall, or a wall meets the floor. Further, the fabric allows for a user to easily grip the rotatable cover assembly <NUM> and remove rotatable cover assembly <NUM> for access to internal components. Fabric <NUM> may exhibit an amount of stretch, allowing it to be stretched over a front surface of rotatable cover assembly <NUM>. Fabric <NUM> may be made of natural, synthetic, or a blend of natural and synthetic fibers. Fabric <NUM> may be treated in order to change or improve various characteristics of fabric <NUM>. For instance, fabric <NUM> may be treated with an anti-mold compound to discourage the growth of mold on fabric <NUM>, especially if the actuator is installed in a moist environment. In other embodiments, rather than a fabric being used, some other material may be used as a front or top surface of rotatable cover assembly <NUM>, such as a metallic or plastic screening.

Due to fabric <NUM> having a visible pattern and/or texture, when rotatable cover assembly <NUM> is installed on an actuator, it may be desirable for aesthetics for rotatable cover assembly <NUM> to be in a particular alignment -- for example, such that the pattern of fabric <NUM> is parallel or perpendicular to a nearby floor, wall, and/or ceiling. Rotatable cover assembly <NUM> may be infinitely rotatable in a clockwise and counterclockwise rotation, such as illustrated by arrow <NUM>. Rotatable cover assembly <NUM> may have no indexed locations, around chassis <NUM>. After rotatable cover assembly <NUM> has been removably coupled with chassis <NUM>, a user may rotate rotatable cover assembly <NUM> either clockwise or counterclockwise to a desired orientation. Once released, friction between rotatable cover assembly <NUM> and cover fastener assemblies <NUM> may hold rotatable cover assembly in the desired orientation.

In a center of rotatable cover assembly <NUM>, an open region <NUM> may be defined. When attached with chassis <NUM> of chassis assembly, a display and/or button supported in the chassis assembly may be visible and/or accessible through the open region <NUM>. Thus, the rotatable cover assembly <NUM> may cover a front of the chassis assembly except for an area of the chassis assembly corresponding to the open region <NUM>. Fabric <NUM> may extend along a curvature of rotatable cover assembly <NUM> onto each side of rotatable cover assembly <NUM>, as illustrated in <FIG>. Each side of rotatable cover assembly <NUM> may match the representation of <FIG>.

In <FIG>, a bottom of rotatable cover assembly <NUM> is illustrated. A bottom surface of cover body <NUM> may not be covered with fabric or screening and may instead be exposed plastic. Cover body <NUM> is rigid or semi-rigid such that fabric <NUM> conforms to an outer surface of cover body <NUM>. Inner ring <NUM> may be used to fasten fabric <NUM> as part of rotatable cover assembly <NUM> in a stretched state. In some embodiments, fabric <NUM> may be glued or otherwise affixed to cover body <NUM>. In such embodiments, one or more rings (e.g., inner ring <NUM>) may be a stick-on label that serves to hide an edge of fabric <NUM> from viewing by a user. The use of such a ring may be primarily for aesthetic reasons. At least some elasticity may be incorporated as part of fabric <NUM> such that if fabric <NUM> is stretched or otherwise displaced by a user, fabric <NUM> will return to its original position when released. Inner ring <NUM> may be attached to cover body <NUM> and may secure fabric <NUM> to cover body <NUM> such that edges of fabric <NUM> are concealed. In some embodiments, an outer ring may be present. In other embodiments, fabric <NUM> may be affixed, such as using glue, directly to cover body <NUM> around an inner edge of cover body <NUM>. Also alternatively, rather than inner ring <NUM> being present, fabric <NUM> may be affixed, such as by using glue directly, to cover body <NUM> around an edge of cover body <NUM> present on a bottom surface of cover body <NUM> where inner ring <NUM> is illustrated as being present.

Referring back to <FIG>, beneath fabric <NUM>, an adhesive may be present, such as in region <NUM>, to affix fabric <NUM> to a front surface of cover body <NUM>. The adhesive used may be a pressure sensitive adhesive (PSA) that may be applied in the form of a doubled-sided pressure-sensitive tape. However, despite being a PSA, the PSA may be heated when applied between the front surface of cover body <NUM> and fabric <NUM>. By heating the PSA, certain properties typical to a heat sensitive adhesive (HSA) may be realized. For example, some of the PSA may be wicked a distance into the knit of the fabric due to a capillary effect. Such wicking may result in better adhesion between fabric <NUM> and a front surface of cover body <NUM>. While in some embodiments ring-shaped region <NUM> is where the PSA is applied and heated, it should be understood that in other embodiments, the PSA may be applied and heated in other or multiple locations. For instance, the PSA may be applied and heated under inner ring <NUM> on a back surface of cover body <NUM>.

<FIG> illustrates an exploded bottom view of rotatable cover assembly <NUM>. In some embodiments, inner ring <NUM> may be present, but not an outer ring. Rotatable cover assembly <NUM> may include: inner ring <NUM>; cover body <NUM>; and fabric <NUM>. Fabric <NUM> may obtain the shape illustrated in <FIG> by being stretched over a top or front surface of cover body <NUM>. Fabric <NUM> may be fastened or affixed (e.g., glued) to inner edge <NUM>. After being fastened or affixed to inner edge <NUM>, fabric <NUM> may be trimmed along the fastened or affixed edge such that a roughly even edge with minimal or limited fraying is present. Fabric <NUM> may further be stretched through open region <NUM> and fastened to inner ring surface <NUM>. Inner ring <NUM> may be fastened or affixed (e.g., glued) to inner ring surface <NUM> such that an edge of fabric <NUM> is secured by inner ring <NUM> to inner ring surface <NUM> and hidden from view.

Present on an inner surface of cover body <NUM> may be circular track <NUM>. Circular track <NUM> may define at least two lips that continuously extend along an inner surface of cover body <NUM> and may interface with cover fastener assemblies <NUM>. Cover fastener assemblies <NUM> may each include a protrusion that slides within the lips of circular track <NUM>. The protrusions of the cover fastener assemblies and the lips of the circular track <NUM> are configured to co-operate so as to allow rotatable cover assembly <NUM> to be pushed onto chassis assembly <NUM> in any rotational orientation in which circular track <NUM> is coaxial with the chassis assembly. As such, a user, when desiring to attach rotatable cover assembly <NUM> to the chassis assembly does not need to attempt to align protrusions of the cover fastener assemblies with any particular part of circular track <NUM>. Further, the protrusions of the cover fastener assemblies and the lips of the circular track <NUM> are configured to co-operate so as to facilitate the rotation of the rotatable cover assembly with respect to the chassis assembly when the rotatable cover assembly is attached to the chassis assembly whilst enabling easy removal by a user of the rotatable cover assembly from the chassis assembly regardless of the rotational orientation of rotatable cover assembly <NUM> with respect to chassis assembly <NUM>. Friction can be present between cover fastener assemblies <NUM> and circular track <NUM> such that when a user is not twisting rotatable cover assembly <NUM> with respect to chassis <NUM>, rotatable cover assembly <NUM> orientation remains static.

<FIG> illustrates an embodiment of cover body <NUM>. Cover body <NUM> may be formed or made from a rigid or semi-rigid material, such as plastic or metal. In some embodiments, cover body <NUM> is injection molded. A top surface of cover body <NUM> may have a texture, such as indicated by raised protrusions <NUM> in magnified region <NUM>. In some embodiments, raised protrusions <NUM> are rectangular pyramids, triangular pyramids, or some other raised pyramidal structure. In some embodiments, raised protrusions <NUM> may be randomly chemically etched. Raised protrusions <NUM> may cover an outer or top surface of cover body <NUM>. Raised protrusions <NUM> may serve multiple purposes. When fabric <NUM> is stretched and wrapped over the top surface of cover body <NUM>, raised protrusions <NUM> may provide friction and help keep fabric <NUM> in place. For instance, if a user applies lateral pressure to fabric <NUM> while fabric <NUM> is wrapped over the top surface of cover body <NUM>, raised protrusions <NUM> may help prevent fabric <NUM> from further stretching and/or bunching. Additionally or alternatively, raised protrusions may increase or otherwise alter the textural feel of fabric <NUM> when fabric <NUM> is stretched and wrapped over the top surface of cover body <NUM>.

Raised protrusions <NUM> represent one possible embodiment of a texture that may be present on a top or front surface of cover body <NUM>. In other embodiments, various forms of texture may be formed as part of the top or front surface of cover body <NUM> that: <NUM>) help hold fabric <NUM> in place over a top or front surface of cover body <NUM>; and/or <NUM>) alter the textural feel of fabric <NUM> when wrapped over the top or front surface of cover body <NUM>. On a bottom or back side of cover body <NUM>, raised protrusions <NUM> may not be present and the bottom or back surface may be smooth.

<FIG> illustrates a top (or front) view of an embodiment of chassis assembly <NUM>. <FIG> illustrates a bottom (or back) view of an embodiment of chassis assembly <NUM>. The following describes a chassis assembly of an actuator for controlling a HVAC system but, as discussed above, it is not intended to limit the features described herein only to an actuator for a HVAC control system. It will be appreciated that one or more features described herein may be used in a chassis assembly of an actuator for controlling other control systems or of another smart home device. Chassis assembly <NUM> may include chassis <NUM>, wiring connector cover <NUM>, cover fastener assemblies <NUM>, button <NUM>, and backplate <NUM>. wiring connector cover <NUM> may be a leashed cover. When rotatable cover assembly <NUM> is removed from chassis <NUM>, battery compartment <NUM> and wiring connector cover <NUM> may be visible and accessible. When unfastened (e.g., when screw <NUM> is unscrewed), wiring connector cover <NUM> may be hung in an open position via cover leash <NUM>. This may allow a user to access terminals present within an wiring compartment to allow control wires, such as HVAC control wires, to be attached and detached. Control wires may be routed through rear opening <NUM> into the wiring compartment that is covered from a front by wiring connector cover <NUM>. By virtue of cover leash <NUM> being used to permanently secure wiring connector cover <NUM> to chassis <NUM>, the loss of wiring connector cover <NUM> may be prevented. Button <NUM> may function as both a display and a user-pressable button that allows direct control of a control system, such as a HVAC system, at actuator <NUM> by a user. For instance, a user may press button <NUM> to manually activate one or more HVAC systems (e.g., a boiler).

A protruding slider of cover fastener assemblies <NUM> may protrude through chassis <NUM>. Cover fastener assemblies <NUM> may be fastened to chassis <NUM> and may be made of a semi rigid material that can flex inward when pressure is applied to a protruding slider of each cover fastener assembly. Pressure applied to a protruding slider of cover fastener assemblies <NUM> may cause the protruding slider to at least partially retract to within chassis <NUM>. Each protruding slider may be tapered on a top and bottom side to allow the slider to retract when rotatable cover assembly <NUM> is pushed onto or pulled off of chassis assembly <NUM>. The protruding sliders of cover fastener assemblies <NUM> may rest in a fully or partially extended state within circular track <NUM> of cover body <NUM> when rotatable cover assembly <NUM> is attached with chassis <NUM>. The protruding sliders of cover fastener assemblies <NUM> can allow for rotatable cover assembly <NUM> to be rotated and oriented into any desirable orientation, such that a texture or grain of fabric <NUM> is aligned with objects or surfaces in the environment of the actuator. When cover body <NUM> is pulled away from chassis <NUM> or when cover body <NUM> is pushed onto chassis <NUM>, the protruding sliders of cover fastener assemblies <NUM> may retract to allow for coupling and decoupling. While two cover fastener assemblies are illustrated as present on chassis assembly <NUM>, it should be understood that fewer or greater numbers of cover fastener assemblies <NUM> may be present in other embodiments.

Fastener pass-throughs <NUM> (<NUM>-<NUM> and <NUM>-<NUM>) may allow for fasteners to be installed through a front of chassis <NUM> to attach backplate <NUM> to a surface, such as a wall. By virtue of chassis <NUM> being fastened to backplate <NUM>, chassis <NUM> is also fastened to the surface. Fasteners may attach with a surface through fastener openings <NUM> (<NUM>-<NUM>, <NUM>-<NUM>). Fastener pass-throughs <NUM> may allow for a screw driver or other installation tool to be used to attach fasteners, such as screws, through chassis <NUM> to backplate <NUM>. Backplate <NUM> may have a flat exterior surface to permit backplate <NUM> to be attached flush to a surface, such as a wall. Such attachment may occur over a location where control wires, such as HVAC control wires, pass through an opening in a wall.

Various compartments may be defined by chassis <NUM> of chassis assembly <NUM>, including battery compartment <NUM> and/or control wire compartment <NUM>. Battery compartment <NUM> may be used to house one or more batteries, such as batteries <NUM>. When batteries are installed in battery compartment <NUM> and rotatable cover assembly <NUM> is removed from chassis assembly <NUM>, batteries <NUM> may be partially visible. Battery holder tab <NUM> may help keep batteries in position within battery compartment <NUM> such that the batteries properly contact spring cap <NUM>, spring cap <NUM>, battery contact <NUM>, and battery contact <NUM> when rotatable cover assembly <NUM> is attached with chassis assembly <NUM>. That is, a back surface of battery holder tab <NUM> may be made of a flexible material and may be curved to roughly match a curvature of cylindrical batteries that are to be installed in battery compartment <NUM>; the inner surface of rotatable cover assembly <NUM> may keep battery holder tab <NUM> pressed against the batteries and in a proper position within battery compartment <NUM>. Battery holder tab <NUM> may be connected to a flexible ribbon leash <NUM>. Ribbon leash <NUM> may serve multiple purposes. First, ribbon leash <NUM> may help prevent battery holder tab <NUM> from being lost by battery holder tab <NUM> being permanently attached to battery holder tab <NUM> and to chassis <NUM>. When battery holder tab <NUM> is pulled by a user, ribbon leash <NUM> may push batteries out of battery compartment <NUM> due to ribbon leash <NUM> residing under batteries <NUM> when batteries <NUM> are installed in battery compartment <NUM>. Therefore, battery holder tab <NUM> and attached battery ribbon leash <NUM> may function together as a single structure to both: <NUM>) hold batteries in place within battery compartment <NUM>; and <NUM>) help remove batteries from battery compartment <NUM>. It should be understood that battery holder tab <NUM> and ribbon leash <NUM> may be adapted for use with fewer or greater numbers of batteries.

<FIG> illustrates a front view of an embodiment of chassis assembly <NUM> with wiring connector cover <NUM> in an open position. When wiring connector cover <NUM> is open, terminals <NUM> (e.g., <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>) may be accessible. control wires, such as HVAC control wires, may enter control wire compartment <NUM> through rear opening <NUM>. When chassis assembly <NUM> is mounted to a wall, wiring connector cover <NUM> can be hung in an open position. In such a position, it may be possible to attach rotatable cover assembly <NUM> to chassis assembly <NUM>.

Cover leash <NUM> may be rubber or some other flexible or semi-rigid material. When wiring connector cover <NUM> is closed, access to terminals <NUM> is prevented and cover leash <NUM> may be stored within control wire compartment <NUM>.

<FIG> illustrates a front view of chassis assembly <NUM> with rotatable cover assembly <NUM> removed. As can be seen, batteries <NUM>, when installed, reside below battery holder tab <NUM>, but above ribbon leash <NUM>. Therefore, when battery holder tab <NUM> is pulled away from chassis <NUM>, ribbon leash <NUM> will extend away from battery compartment <NUM> and will push batteries <NUM> from battery compartment <NUM>.

Dead front display <NUM> may function as a display and as a button (button <NUM>). <FIG> illustrates a front view of actuator <NUM> in which rotatable cover assembly <NUM> is removably attached with chassis assembly <NUM>. When rotatable cover assembly <NUM> is attached with chassis assembly <NUM>, dead front display <NUM> remains exposed and visible. Dead front display <NUM> may appear to have a blank display surface when no internal light behind the dead front display surface is illuminated. Region <NUM> or region <NUM> may be at least partially illuminated from within chassis assembly <NUM> when one or both of the internal lights are illuminated. Various graphics, numbers, or letters may be illuminated by etching such graphics, numbers, or letters into a layer of regions <NUM> and <NUM>. It should be understood that the number of regions may be greater or fewer depending on the number of items desired to be displayed on dead front display <NUM>. The dead front display surface may be movable with respect to the opening in the rotatable cover assembly <NUM>. A user may press dead front display <NUM> such that dead front display <NUM> depresses a distance and functions as a button.

<FIG> illustrates a top view of an embodiment of a button, rubber boot assembly, a light pipe assembly, and a PCB. <FIG> illustrates a location of cross-section <NUM>. The location of cross-section <NUM> may also be indicative of the location of cross-section <NUM> of <FIG> and <NUM> of <FIG>. <FIG> illustrates a cross-section <NUM> of button <NUM>, light boot assembly <NUM>, light pipe assembly <NUM>, and PCB <NUM>. In cross-section <NUM>, two lighting elements, which may be LEDs, are mounted on PCB <NUM>: lighting element <NUM>-<NUM> and lighting element <NUM>-<NUM>. Lighting element <NUM>-<NUM>, when active, emits light into light pipe <NUM> of light pipe assembly <NUM>. Lighting element <NUM>-<NUM>, when active, emits light into light pipe <NUM> of light pipe assembly <NUM>. Light pipes <NUM> and <NUM> may have different shapes to illuminate different sizes of graphics, icons, text, or numbers on button <NUM>. For instance, light pipe <NUM> may have a wider top than light pipe <NUM> to accommodate even illumination of a larger graphic on button <NUM>. Light pipes <NUM> and <NUM> may be made from a transparent or translucent material, such as glass or clear plastic. Due to the refraction index between air and the transparent or translucent material of light pipes <NUM> and <NUM>, most light emitted by lighting elements <NUM> may be internally reflected within light pipes <NUM> and <NUM> and emitted from front surfaces <NUM>-<NUM> and <NUM>-<NUM>.

Rubber boot <NUM> may be opaque and prevent stray light from light pipe <NUM> (e.g., light emitted from a side of light pipe <NUM>) or light from lighting element <NUM>-<NUM> from inadvertently allowing reflected light to exit the actuator. Rubber boot <NUM> may also be opaque and prevent stray light from light pipe <NUM> (e.g., light emitted from a side of light pipe <NUM>) or light from lighting element <NUM>-<NUM> that did not enter light pipe <NUM> from inadvertently allowing reflected light to exit the actuator. When button <NUM> is depressed, light pipes <NUM> and <NUM> may be unaffected, but rubber boots <NUM> and <NUM> may be partially compressed or deformed. While being compressed or deformed, rubber boots <NUM> and <NUM> may continue to block light from being reflected to an undesired location. In other embodiments, rubber boots <NUM> and <NUM> may be formed from some other flexible or semi-flexible material. In still other embodiments, rubber boots <NUM> and <NUM> may be located at least a distance from button <NUM> such that when button <NUM> is depressed, button <NUM> does not touch rubber boots <NUM> or <NUM>. Such an arrangement may permit rubber boots <NUM> or <NUM> to be formed from a rigid or semi-rigid material, such as plastic or metal.

Light from lighting element <NUM>-<NUM> may primarily be emitted through front surface <NUM>-<NUM>. Similarly, light from lighting element <NUM>-<NUM> may primarily be emitted through front surface <NUM>-<NUM>. Button <NUM> may include body <NUM>, which may be formed from an opaque material, such as plastic or metal. Body <NUM> may have regions, such as region <NUM> and region <NUM>, that are filled with a translucent or transparent material, such as plastic or glass. Regions <NUM> and <NUM> can refer, for example, to regions <NUM> and <NUM>, respectively, of <FIG>.

On a front surface of body <NUM>, a coat of opaque paint <NUM>, which may be black, may be applied. This opaque paint may block light from being emitted through a front of body <NUM>. A portion of this opaque paint <NUM> may be removed, such as via laser etching, to form one or more graphics, icons, letters, or numbers over regions <NUM> and <NUM>. The front surface, over the coat of opaque paint <NUM> and etched portions, may be coated with semi-transparent paint <NUM>, which may be gray or some other color. Semi-transparent paint <NUM> may allow light to be passed through in regions <NUM> where the semi-transparent paint is affixed directly to regions <NUM> and <NUM>. When light is not being illuminated through regions <NUM> and <NUM>, a front of button <NUM> may appear blank or a "dead" front. Due to removal having been performed to some portion of opaque paint <NUM>, regions <NUM> may appear slightly depressed or inset from a front surface of button <NUM>.

While cross-section <NUM> illustrates two light pipes <NUM> and <NUM>, which are of different shapes, it should be understood that cross-section <NUM> is merely an example. In other embodiments, greater or fewer numbers of light pipes may be present. Further, the light pipes may be of the same shape or various other shapes.

<FIG> illustrates a cross-section <NUM> of button <NUM>, light boot assembly <NUM>, light pipe assembly <NUM>, and PCB <NUM> as indicated by the line <NUM> in <FIG>. The embodiment of <FIG> functions differently in that a dead front of button <NUM> is achieved in a different way than in <FIG>. In <FIG>, transparent inserts <NUM> and <NUM> are inserted into cutouts within body <NUM> such that on a top surface <NUM> of body <NUM>, the inserts are exposed and shaped to match the graphic, icon, letters, or numbers that are to be displayed when the corresponding lighting element is lit. In some embodiments, there is a paint layer, which may be black, atop transparent inserts <NUM> and <NUM> that may be etched to form the desired icon shape. The top surface of body <NUM>, along with the top surfaces of transparent inserts <NUM> and <NUM>, may be coated in a semi-transparent paint <NUM>, which may be gray or some other color. Since no etching is performed, a top surface <NUM> of button <NUM> may be flat. When lighting elements <NUM> are not emitting, top surface <NUM> may appear blank (e.g., a "dead front"). When lighting element <NUM>-<NUM> is emitting light, the shape formed on top surface <NUM> may be illuminated through semi-transparent paint <NUM>. The embodiment of <FIG> may require fewer manufacturing steps to manufacture than the embodiment of <FIG> since no etching is needed. In some embodiments, rubber boot <NUM> and rubber boot <NUM> may not contact light pipes <NUM> and <NUM>. By not touching, the efficiency of light pipes <NUM> and <NUM> may be improved by the difference in refraction index between light pipes <NUM> and <NUM> and air allowing for full internal reflection of light travelling through light pipes <NUM> and <NUM>. If rubber boot <NUM> or rubber boot <NUM> contacted a side of light pipes <NUM> and <NUM>, this full internal reflection may not be achieved.

<FIG> illustrates an embodiment <NUM> of a cross-section of button <NUM>, light boot assembly <NUM>, light pipe assembly <NUM>, and PCB <NUM> as indicated by the line <NUM> in <FIG>. Embodiment <NUM> may be used in conjunction with the "dead-front" embodiments detailed in relation to <FIG> and <FIG> or may be used separately. Embodiment <NUM> includes features that make it more difficult for stray light from lighting element <NUM> to exit the actuator device, other than through the corresponding transparent inserts. In embodiment <NUM>, light pipe extensions <NUM> (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>) extend downward from light pipe assembly <NUM> and serve to capture additional light from lighting elements <NUM>. Light pipe extensions <NUM>, in combination with a lower surface of light pipes <NUM> and <NUM>, partially enclose lighting elements <NUM>. In some embodiments, light pipe extensions <NUM>-<NUM> and <NUM>-<NUM> may be part of a single continuous structure that encircles lighting element <NUM>-<NUM>. In some embodiments, light pipe extensions <NUM>-<NUM> and <NUM>-<NUM> may be part of a single continuous structure that encircles lighting element <NUM>-<NUM>. In some embodiments, light pipe extensions <NUM> may touch PCB <NUM> to increase the collection of light emitted from lighting elements <NUM>.

Additionally or alternatively, light boot assembly <NUM> may contact light pipes <NUM> and <NUM> at an edge of light pipe top surfaces <NUM> and <NUM>. At contact points <NUM>-<NUM> and <NUM>-<NUM>, rubber boot <NUM> may contact light pipe <NUM>. This arrangement may help prevent light emitted from sides of light pipe <NUM> other than top surface <NUM> from escaping from the actuator device. Similarly, at contact points <NUM>-<NUM> and <NUM>-<NUM>, rubber boot <NUM> may contact light pipe <NUM>. This arrangement may help prevent light emitted from sides of light pipe <NUM> other than top surface <NUM> from escaping from the actuator device. While two contact points are illustrated for each of light pipes <NUM> and <NUM>, it should be understood that this is due to a cross-section being illustrated in embodiment <NUM>. It should be understood that rubber boot <NUM> may contact and encircle top surface <NUM>. Similarly, rubber boot <NUM> may contact and encircle an edge of top surface <NUM>.

Additionally or alternatively, light containment extensions <NUM> may extend downward from button <NUM>. Light containment extensions <NUM> may prevent light emitted from top surfaces <NUM> and <NUM> from exiting the actuator device from any location other than through corresponding transparent regions <NUM> and <NUM>. As such, a user may not view light in any unintended region of the actuator device. Light containment extensions <NUM> may be made from an opaque material, such as a same type of material (e.g., plastic) as body <NUM>. Light containment extensions <NUM> may extend from button <NUM> towards PCB <NUM> and may form partially-enclosed cavities <NUM> and <NUM>. Light pipes <NUM> and <NUM> may extend partially into cavities <NUM> and <NUM>. Ample room within cavities <NUM> and <NUM> may be present between top surfaces <NUM> and <NUM> such that, when button <NUM> is fully depressed, button <NUM> or light containment extensions <NUM> do not contact PCB <NUM>, light boot assembly <NUM> or light pipe assembly <NUM>. It should be understood that light containment extensions <NUM>-<NUM> and <NUM>-<NUM> may be part of a continuous light containment extension that forms cavity <NUM>. Similarly, it should be understood that light containment extensions <NUM>-<NUM> and <NUM>-<NUM> may be part of a continuous light containment extension that forms cavity <NUM>.

<FIG> illustrate an embodiment of cross section <NUM> of button <NUM>, compressible extension <NUM>, switch <NUM>, and PCB <NUM>. Cross section <NUM> can represent an embodiment of a cross section in the location of cross section <NUM> (without any light pipes or rubber boots illustrated for simplicity). In the embodiment of cross section <NUM>, button <NUM> can be pushed by a user. When button <NUM> is depressed, button <NUM> travels towards PCB <NUM>; however, PCB <NUM> remains in a fixed location. As such, when pushed, button <NUM> becomes closer to PCB <NUM>. Switch <NUM> may be soldered (surface mount, through-mount) or otherwise affixed to PCB <NUM>. When button <NUM> is pushed, switch <NUM> may be actuated such that one or more components on PCB <NUM> (e.g., a processor) can determine that button <NUM> has been pushed.

Compressible extension <NUM> may extend from a bottom surface <NUM> of button <NUM> to switch <NUM>. Compressible extension <NUM> may be hollow, such that an outer wall encloses a cavity <NUM> filled with air. In other embodiments, multiple flexible supports may extend from bottom surface <NUM> to switch <NUM> such that cavity <NUM> is not enclosed, but is rather an open region. Compressible extension <NUM> may be made from a flexible or semi-rigid material that is rigid enough that when button <NUM> is depressed, compressible extension <NUM> exerts sufficient force to actuate switch <NUM>. For example, compressible extension <NUM> may be made from rubber or plastic. When switch <NUM> has been actuated but button <NUM> is further depressed, compressible extension <NUM> may flex. This flexing may prevent excessive force from being exerted onto switch <NUM> and/or PCB <NUM>, which could damage various components (e.g., break switch <NUM>, bend PCB <NUM>).

A switch may be damaged by impact force on the button surface. The structures of <FIG> prevent damage by helping to absorb impact energy that would cause damage to switch <NUM> without being flexible at normal use forces. Such an arrangement can prevents the button from feeling "mushy" (e.g., can help maintain a feeling of a tactile click). As shown in <FIG>, when button <NUM> is not pushed or insufficient pressure is exerted, compressible extension <NUM> is in a fully extended state. As shown in <FIG>, when sufficient pressure is exerted on button <NUM> (as indicated by arrow <NUM>), switch <NUM> is actuated and compressible extension <NUM> flexes outward to prevent excessive force from being transferred to switch <NUM> and PCB <NUM>. In some embodiments, cavity <NUM> may grow in volume by one or more walls of compressible extension <NUM> flexing outward. (If cavity <NUM> is enclosed, one or more pressure-compensating holes may be present to allow air to enter and leave cavity <NUM>. ) If cavity <NUM> is not enclosed, but rather multiple supports make up compressible extension <NUM>, these supports may flex outward from a relaxed or extended position. When pressure is stopped being applied to button <NUM>, button <NUM> will move away from PCB <NUM> and compressible extension <NUM> will return to the relaxed or extended position of <FIG>. Such embodiments may decrease the manufacturing cost of the actuator by allowing switch <NUM> to be mounted in a fixed location on PCB <NUM>, but still help prevent damage to PCB <NUM> and/or switch <NUM> if undue pressure is applied to button <NUM>.

Referring to <FIG>, when button <NUM> is pressed, sufficient distance between light pipes <NUM> and <NUM> and button <NUM> may be present such that button <NUM> does not contact light pipes <NUM> and <NUM>, which may be rigid. Contact between button <NUM> and rubber boots <NUM> and <NUM> may occur; however, since rubber boots <NUM> and <NUM> are flexible or compressible, rubber boots <NUM> and <NUM> may compress or deform temporarily while button <NUM> is depressed. While compressed or deformed, rubber boots <NUM> and <NUM> may continue to block light leakage from sides of light pipes <NUM> and <NUM>.

<FIG> illustrates an embodiment <NUM> of a cross-section of a battery contact that is electrically connected with contacts on PCB <NUM>. In embodiment <NUM>, battery contact <NUM>, which may contact a terminal of a battery, is illustrated. In order to firmly affix battery contact <NUM> to PCB <NUM>, an arrangement that will be resilient enough to withstand multiple impacts may be useful. For instance, a soldered connection may be insufficient to protect a connection between battery contact <NUM> and an electrical contact on PCB <NUM> if the actuator device has a significant impact, such as a drop of a meter or greater. Bolt <NUM> (or some other form of screw) may pass through an opening in battery contact <NUM>. Both of bolt <NUM> and battery contact <NUM> may be conductive, such as by being made of metal. Bolt <NUM> may pass through a mounting hole in PCB <NUM>. Bolt <NUM> may be fastened to nut <NUM>, which may also be made of metal, such that a head of bolt <NUM> provides pressure on a surface of battery contact <NUM> and nut <NUM> provides pressure on an opposite side of PCB <NUM>. This pressure may help maintain an electrical connection between bolt <NUM>, nut <NUM>, battery contact <NUM>, and various electrical contacts <NUM> (e.g., <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>) arranged on PCB <NUM> to electrically connect battery contact <NUM> with power circuitry on PCB <NUM>. Battery contact <NUM> may be connected with PCB <NUM> in the same or a similar manner.

<FIG> illustrate an embodiment of mounting plate <NUM>. In <FIG>, a front side of an embodiment of mounting plate <NUM> is illustrated. In <FIG>, a back side of an embodiment of mounting plate <NUM> is illustrated. Mounting plate <NUM> may optionally be positioned between backplate <NUM> and a surface to which actuator <NUM> is to be attached. Mounting plate <NUM> may be used if control wires, such as HVAC control wires, are routed external to the surface to which actuator <NUM> is to be attached. If HVAC control wires are routed external to the surface, mounting plate <NUM> may provide clearance such that control wires can be routed through backplate <NUM>, while still allowing actuator <NUM> to be mounted securely with the surface. Body <NUM> may be constructed of a rigid or semi-rigid material, such as plastic. On body <NUM>, fastener pass-throughs <NUM> (<NUM>-<NUM> and <NUM>-<NUM>) may be present. Fastener pass-throughs <NUM> may allow fasteners (e.g., screws, nails) that are fastened through fastener pass-throughs <NUM> to also pass through mounting plate <NUM>. Fasteners through both sets of fastener pass-throughs may hold chassis assembly <NUM> and mounting plate <NUM> firmly against a surface into which the fasteners are installed. Control wiring may be routed along the surface through sidewall gap <NUM>, such that HVAC control wiring can pass through opening <NUM> defined by body <NUM>. Such HVAC control wiring can then be passed through rear opening <NUM> and into the control wiring compartment <NUM> and connected with terminals <NUM>.

A back edge <NUM> of sidewall <NUM> may seat flush against a flat surface (e.g., wall) to which mounting plate <NUM> is attached. sidewall <NUM> may keep the main surface of body <NUM> a distance from the surface, allowing ample room for control wiring to be routed through sidewall gap <NUM> and through opening <NUM>.

<FIG> illustrate an embodiment <NUM> of chassis assembly <NUM> mounted on mounting plate <NUM>. Chassis assembly <NUM> may be held against mounting plate <NUM> by fasteners that pass through fastener pass-throughs <NUM> and fastener pass-throughs <NUM>. Such fasteners may be fastened into the surface to which actuator <NUM> is to be mounted. As can be seen in <FIG>, when chassis assembly <NUM> is properly mounted on mounting plate <NUM>, opening <NUM> of mounting plate <NUM> at least partially overlaps rear opening <NUM> of backplate <NUM> such that control wiring can be passed through sidewall gap <NUM>, opening <NUM>, and into the control wire compartment <NUM> through rear opening <NUM> of backplate <NUM>.

While <FIG> were directed to embodiments of actuator <NUM>, FIGS. <NUM>-<NUM> are directed to embodiments of stand device <NUM>. In the following description, a smart home device comprising a thermostat will be described. It will, however, be appreciated that one or more of the features described herein may be used with other smart home devices, such as a control device or a sensor or an input device, and which smart home device may include a door bell, camera, temperature sensor, smoke detector, carbon monoxide detectors, home assistants or other similar devices. <FIG> illustrate an embodiment <NUM> of thermostat <NUM> attached to stand <NUM> (which may be an embodiment of stand device <NUM>). <FIG> illustrates a front view of embodiment <NUM> of thermostat <NUM> attached to stand device <NUM>. <FIG> illustrates a side view of embodiment <NUM> of thermostat <NUM> attached to stand device <NUM>. Stand device <NUM> may permit thermostat <NUM> to be powered and to be supported on a flat surface (e.g., table, shelf, desk, floor, etc.). Thermostat <NUM> may be cylindrical and may have an outer ring that rotates. Ring <NUM> may match a contour of stand <NUM>.

<FIG> illustrate an embodiment of stand assembly <NUM> that includes stand device <NUM> connected with cable <NUM> (and without the thermostat (or other smart home device)). Cable <NUM> may be a universal serial bus (USB) cable (or some other form of cable) that is being used to supply a thermostat that is connected with connector <NUM> with power. USB connector <NUM> may be connected to a power supply or other device that supplies an appropriate direct current voltage. Cable <NUM> may be permanently connected with base <NUM>. Connector <NUM> may be electrically connected to cable <NUM> in order to provide a connected thermostat (or other form of smart home device) with power. Stand face <NUM> may be a flat or nearly flat surface that allows a thermostat to sit flush on stand device <NUM>, as illustrated in <FIG>. Base <NUM> may be at least partially made from a heavier material than stand face <NUM> or stand back <NUM> in order for stand device <NUM> to have a lower center-of-gravity and to stand regardless of whether a thermostat is attached with connector <NUM>. Stand back <NUM> may be generally convex in shape.

<FIG> and <FIG>, collectively, illustrate an exploded view of stand assembly <NUM>. Stand assembly <NUM> can include: stand face <NUM>; connector assembly <NUM>; sensor housing <NUM>; bracket <NUM>; conductive foam <NUM>; fasteners <NUM> (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>); stand back <NUM>; stand base <NUM>; bracket <NUM>; hollow fastener <NUM>; cable <NUM>; plate <NUM>; fasteners <NUM> (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>); and baseplate <NUM>. Present on connector assembly <NUM> may be connector <NUM> to which a thermostat may be removably connected. Connector assembly <NUM> may include PCB <NUM>, to which one or more sensors, such as temperature sensors, may be located. Connector <NUM> may transfer data indicative of sensor measurements, such as temperature measurements, to a connected thermostat via connector <NUM> (in addition to providing power). Connector <NUM> may be fastened to PCB <NUM> using solder. In order to increase durability, connector <NUM> may be fastened using multiple fasteners that pass through PCB <NUM>. For instance, bolts and nuts may be used on connector <NUM> to durably hold connector <NUM> to PCB <NUM>. Cable <NUM> may be routed through hollow fastener <NUM>, thus allowing electrical connectors <NUM> of cable <NUM> to be connected with PCB <NUM>. Hollow fastener <NUM> may be a screw that screws into threads of stand base <NUM>.

<FIG> illustrates an embodiment of a stand assembly <NUM> with a stand face removed. Stand face <NUM> may be attached to stand back <NUM> without the use of any separate fasteners, such as screws. Rather, slide clips <NUM> (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>), which can be referred to as radial snaps, can allow for stand face <NUM> to be rotated into place against stand back <NUM>. First, PCB <NUM> may be attached to a rear of stand face <NUM>. When stand face <NUM> with attached PCB <NUM> (and connector <NUM>, which at least partially protrudes through stand face <NUM>) is twisted against stand back <NUM>, slide clips <NUM> may engage with counterpart slide clip receptacles on a rear of stand face <NUM>. By using slide clips <NUM> and the slide clip receptacles on the rear of stand face <NUM>, stand face <NUM> may be coupled with stand back <NUM> without using separate fasteners or adhesive.

<FIG> illustrates an embodiment of a stand assembly <NUM>. In <FIG>, the location of cross-section <NUM> is illustrated. <FIG> illustrates a cross section <NUM> of an embodiment of stand assembly <NUM>. In the embodiment of cross-section <NUM>, arrow <NUM> depicts the path of wiring from cable <NUM>. Wiring from cable <NUM> may pass through a hollow center of hollow fastener <NUM> and pass into an interior cavity between stand back <NUM> and stand face <NUM>. Wiring from cable <NUM> may be attached (e.g., soldered) to a contact present on PCB <NUM>. As such, power from cable <NUM> may be supplied to PCB <NUM> and a device connected with connector <NUM>.

Further, hollow fastener <NUM> may be used to anchor stand back <NUM> to base <NUM>. In some embodiments, stand back <NUM> may first be fastened to base <NUM> using hollow fastener <NUM>. Cable <NUM> may then be attached to base <NUM> and wiring from cable <NUM> may be run through hollow fastener <NUM>. The wiring may then be connected with corresponding contacts on PCB <NUM>. Stand face <NUM> may then be secured to stand back <NUM>.

Additionally or alternatively, the embodiment of cross-section <NUM> can include conductive foam <NUM>. Conductive foam <NUM> may be initially positioned and/or affixed to PCB <NUM> such that conductive foam <NUM> is electrically connected with a ground (e.g., a ground contact on the PCB that is connected to a ground wire of cable <NUM>, directly to a ground wire of cable <NUM>). When stand face <NUM> is twisted into a locked position on stand back <NUM>, conductive foam <NUM> may be twisted to be compressed against hollow fastener <NUM>. Hollow fastener <NUM> may be formed from a conductive material (e.g., metal) and may further be in contact with metal of base <NUM>, such as base threaded region <NUM>. Therefore, compressed conductive foam <NUM> serves to electrically connect hollow fastener <NUM> and base <NUM> to an electrical ground. In some embodiments, another compressible and conductive material other than foam may be used to form the electrical connection between hollow fastener <NUM> and an electrical ground of PCB <NUM>.

Additionally or alternatively, the embodiment of cross-section <NUM> can include sensor housing <NUM>. Sensor housing <NUM> isolates airspace near temperature and/or humidity sensor <NUM> from other airspace within the stand device. Via air channel <NUM>, which opens to the ambient environment, temperature and/or humidity sensor <NUM> is exposed to the ambient environment, but is blocked from the airspace within other parts of the stand device by sensor housing <NUM>. In some embodiments, sensor housing <NUM> is rubber, plastic, or some other flexible, rigid, or semi-rigid material.

<FIG> illustrates a detailed image of an embodiment <NUM> of a connection region between a cable and a base of a stand assembly. In embodiment <NUM>, cable <NUM> has an overmold that serves to anchor cable <NUM> with base <NUM>. Overmold <NUM> may provide strain relief, such that force applied to pulling cable <NUM> does not result in force being applied to the wires or contact of cable <NUM> where connected with PCB <NUM>. Rather than a hole being present in base <NUM> through which cable <NUM> passes, slot <NUM> is present in base <NUM> into which overmold <NUM> is inserted prior to baseplate <NUM> being attached to base <NUM>. Overmold <NUM> may include portion <NUM>, base edge portion <NUM>, overmold body <NUM>, and overmold extensions <NUM> (<NUM>-<NUM> and <NUM>-<NUM>).

Claim 1:
A smart home device (<NUM>; <NUM>), comprising:
a chassis assembly (<NUM>; <NUM>) that defines one or more compartments (<NUM>, <NUM>) and the chassis assembly comprises a plurality of cover fasteners (<NUM>);
a rotatable cover assembly (<NUM>; <NUM>) configured to be removably attached with the plurality of cover fasteners (<NUM>) to the chassis assembly (<NUM>; <NUM>) to at least partially cover a front of the chassis assembly (<NUM>; <NUM>), wherein the rotatable cover assembly (<NUM>; <NUM>) is configured to be rotatable with respect to the chassis assembly (<NUM>; <NUM>) while the rotatable cover assembly (<NUM>; <NUM>) is removably attached with the plurality of cover fasteners (<NUM>),
characterised in that:
the rotatable cover assembly (<NUM>; <NUM>) is configured to be attached and removed from the chassis assembly (<NUM>; <NUM>) in any rotational orientation; and
while the rotatable cover assembly (<NUM>; <NUM>) is removably attached with the plurality of cover fasteners (<NUM>), the rotatable cover assembly (<NUM>; <NUM>) is configured to block access to the one or more compartments (<NUM>, <NUM>) defined by the chassis assembly (<NUM>; <NUM>).