GoControl WNK01-21KIT Essential Z-Wave Home Security Suite Pairs With A Z-wave Hub To Create A Customizable, Expandable Home Security System Monitors Activity & Controls Reactions Through The Hub's App Interface Expandable With Additional Sensors, Door Locks, Light Switches & Dimmers Sensors Sync To Other Products To Trigger Actions Such As A Light Turning On When Motion Is Detected system Includes: GoControl D/W sensors are easy to install; Monitor doors, windows, medicine cabinets and safes; Alerts are sent via in-app push notifications GoControl motion sensor is easy to install and is perfect for detecting movement in hallways or rooms; Alerts sent via in-app push notifications Adding GoControl sensors to a hub is easy; insert the battery to the sensor; open your app follow on screen instructions to add sensor to network The GoControl Essentials kit allows for easy expansion to include more sensors, cameras, door locks etc. The GoControl Essentials kit sensors can also be used in lifestyle or aging in place scenarios - occupancy sensing, triggering lighting events etc.