Abstract:
An emergency device for safely shutting off pumps and associated equipment (loads) for pools and spas. The emergency input device is mounted within code required distance of the pools or spas and electrically connected to switch box by radio signals. The switch box features relays that will interrupt power to motor and associated equipment when signaled by emergency input device. Switch box features a reset with automatic, remote radio, and manual capability that re-energizes the motor and equipment when an emergency is cleared. The separation of the emergency input device and reset switch removes the possibility of resetting false signals. A discreetly mounted remote reset switch affords operators additional emergency reaction choices. The switch box additionally provides an alarm and a remote monitoring capability for supervisory personal. The circuit design of emergency device protects motor and equipment from transients and early failure with orderly shut down. Modular design of emergency device allows simple single applications or scaling up for additional motors and equipment.

Description:
FEDERALLY SPONSORED RESEARCH  
       [0001]     Not Applicable  
       SEQUENCE LISTING OR PROGRAM  
       [0002]     Not Applicable  
       BACKGROUND  
       [0003]     1. Technical Field of Invention  
         [0004]     This invention relates to safety and enhanced remote control of power loads or equipment.  
         [0005]     2. Background of the Invention  
         [0006]     Existing commercial pools and spas control hazards have been largely un-addressed by manufacturers and operators. The majority of commercial installations are unattended and without monitoring. Following customer deaths and recent legislation a safety device must be available to reduce hazard and injuries. In U.S. Pat. No. 5,920,923 Jillette discloses a hydro-therapeutic stimulator for females and includes control for user. Jillette intended a specialized clientele and individual control is all that is offered which will not satisfy the requirements of large or commercial pools or spas. In U.S. Pat. No. 6,109,050, Zakryk discloses a “Self regulating pool heater unit” with an automatic timer by-pass switch. Although Zakryk includes “safety monitoring” facilities (for conditioning equipment) there is nothing to offer ease of identify, immediately available emergency safety shut off capability for user hazards. In U.S. Pat. No. 6,552,284 Drago discloses a water pump low-pressure cutoff switch. While this is a potentially a useful device it affords no offering of immediately available emergency safety shut off capability. In U.S. Pat. No. 6,747,367 Cline discloses a controller system for pool and/or spa. While Cline has a comprehensive controller proposed the extensive functionality and operator focus of the controller are prohibitive for an immediately available emergency safety identification and shut off. In U.S. Pat. No. 6,775,863 Hutchings discloses a spa or pool switch that can be used on a pool or spa shell without drilling a hole in the shell. While Hutchings has a potentially useful device it is designed for user control and not suited for general applications and pre-installed systems requiring an immediately available emergency safety shut off capability. A vacuum monitoring cutoff device is offered by Stingl (no patent evident). The Stingl Switch monitors vacuum levels and will cutoff power through a contactor when vacuum level is detected. This device does not comply with Code requirements; no visible switch for individuals and has been plagued with late response and corrosion problems. An emergency cutoff device is offered from Compool. Compool offers a LX80/2 (no patent evident) that will afford an emergency cutoff switch for pools and spas. This offering has many options and flexibility but demands a cable be run to the safety cutoff switch near the pool or spa. This limitation (hard line connection) has unnecessary hazards from water and potential high installation costs around concrete and other associated physical structures during retrofitting of device. Efforts to date have offered control panels that could be confusing or difficult to access in an emergency situation. There exists a need for an immediately available emergency safety shut off capability within sight to satisfy National Electric Code 680-12 (2005). In addition a need exists for simplified installation of potentially complicated and expensive retro installation while maintaining safety aspects for patrons. Also, remote monitoring will improve potential responsiveness by site supervisors in emergency situations. An optional automatic reset will minimize unnecessary down time and maintain water quality of hot tub or pool after an emergency. Furthermore, a remote reset will increase operator flexibility and reduce requirements on site staff.  
       OBJECTS AND ADVANTAGES  
       [0000]     Objects  
         [0007]     Accordingly, besides the objects and advantages of the devices described in my above patent, several objects and advantages of the present invention are: 
        a. to provide a device capable of immediately halting operation of all pumps and associated equipment (loads),     b. to provide a reset that is separate from shut down switch to avoid misuse,     c. to provide an orderly shut down of loads that is electrically safe (reduced arcing),     d. to provide a positive halt switch to remove operator confusion (as with multifunction panels) or indecision,     e. to provide a device that can be expanded to include multiple loads,     f. to provide a device that can be easily installed,     g. to provide a radio remote off to simplify device installation, for security purposes a remote radio cutoff that changes codes each time used to prevent hi-tech monitoring and capture. And only responds to programmed pair     h. to provide a radio remote reset to simplify system reset, for security purposes a remote radio reset changes codes each time used to prevent hi-tech monitoring and capture. Uses 4.3 billion different access security codes. And only responds to programmed pair     i. to provide a radio remote alert to notify responsible individual,     j. to provide a self contained auto reset function with a delay time to allow for emergency to be cleared.     k. accomplish embodiment with FCC certified enabling wireless controllers for low production volumes,     l. accomplish embodiment with discrete wireless components for high production volumes. 
 
 Advantages 
       
 
         [0020]     As can be seen in the following drawings advantages include a simple device and enclosure including ease of installation for ease of retrofitting on existing pools and spas. Purposed being to provide for the orderly shutdown of power to pumps, motors, and associated equipment (loads) with minimal arcing for load protection and increased reliability. Orderly is defined herein as systematic removal of electrical current and voltage through relay contactors to minimize shock to loads such as pumps and motors that can be damaged by arcing as a result of direct disconnection.  
         [0021]     Further objects and advantages are to provide a small efficient device that can easily fit in cramped spaces and handle all necessary current of expected device loads. Additionally, to simplify installation by connecting remote switch by radio waves over a transmitter/receiver pair with battery power to eliminate effort intensive cable installation. In addition to simplify operation by connecting a remote reset switch by radio waves with battery power to eliminate the need for operators to access pump house equipment when restarting pump and heater after a shut down. Additionally, to provide a monitoring capability to notify responsible individual when a shut down has been initiated. In addition to provide an automatic restart function that can be selectively engaged and when engaged restart anytime a shut down is performed.  
       SUMMARY OF THE INVENTION  
       [0022]     In accordance with the present invention a Safety Stop device includes a circuit board that can be modularly adapted and configured to most requirements by a technician on site. The present statute follows for readers information.  
         [0000]     IV. Spas and Hot Tubs  
         [0023]     From National Electric Code (NEC) 2005 the following:  
         [0024]     680.40 General.  
         [0025]     Electrical installations at spas and hot tubs shall comply with the provisions of Part I and Part IV of this article.  
         [0026]     680.41 Emergency Switch for Spas and Hot Tubs.  
         [0027]     A clearly labeled emergency shutoff or control switch for the purpose of stopping the motor(s) that provide power to the recirculation system and jet  
         [0028]     system shall be installed at a point readily accessible to the users and not  
         [0029]     less than 1.5 m (5 ft) away, adjacent to, and within sight of the spa or hot.  
         [0030]     tub. This requirement shall not apply to single-family dwellings.  
         [0031]     The difficulty involved in installation of the Safety Stop device comes from existing structures around Hot Tubs and the nature of having water and splashing around electrical distribution devices. To address these difficulties the Safety Stop device has a battery powered radio transmitter for the cutoff switch mounted near the Hot Tub as required by National Electric Code. The switch is housed in a sealed and gasketed enclosure. The radio uses a pre-operational programmed transmitter/receiver pair that features 4.3 million unique combinations for a secure rolling code to prevent “mistaken” cutouts from other transmitters on the same frequency or nearby frequency bleeding over. Additionally, a remote reset is also available for operators not wanting to go into pool house to reset Hot Tub power after a cutoff or power failure. The minimal night staffing of places such as Motels demands that managers not be away from front desk for extended periods. The reset switch is not labeled and placed under the box to avoid casual use by the curious or pranksters. The reset switch features an identical but separately programmed transmitter/receiver pair. Furthermore, a remote alert is included with Safety Stop to alert management staff that may be remote from the Hot Tub with Safety Stop. This audible alarm consists of a sonnelert that will be energized by operation of cutoff switch. The audible alarm is detected by a microphone and radio that transmits the audible signal of the sonelert to a receiver located near management (such as a front desk clerk in a Motel or Hotel). When the signal from the remote monitor speaker is heard the clerk follows individual management procedures to effect safety measures and after the emergency is cleared restores Hot Tub to normal operation with reset switch located with the cutoff switch or at the pump equipment station. Additionally, an automatic reset feature may be enabled. This feature is enabled where management is convinced that no safety problems will be encountered when the cutoff will reset automatically, typically 15 minutes after cutoff switch is activated. The adaptation of enabling wireless controllers reduces the cost impact in a cost sensitive market of FCC certification for low power radiating devices in control bands. Larger volumes would use discrete components and amortize development and certification costs over more units. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0032]      FIG. 1  is a perspective view of my Safety Stop for Pools and Spas installed on a spa.  
         [0033]      FIG. 2  is a perspective view of Safety Stop for Pools and Spas control enclosure.  
         [0034]      FIG. 3  is a wiring block diagram for radio control portion of Safety Stop for Pools and Spas.  
         [0035]      FIG. 3A  is a wiring diagram for circuit modifications to cutoff and reset radio transmitters.  
         [0036]      FIG. 3B  is a wiring diagram for circuit modifications to cutoff radio receiver.  
         [0037]      FIG. 4  is a schematic wiring diagram for switching control portion of Safety Stop for Pools and Spas.  
         [0038]      FIG. 5  is a schematic wiring diagram for output control portion of Safety Stop for Pools and Spas.  
         [0039]      FIG. 6  is a schematic wiring diagram for auto reset timer and remote monitor portion of Safety Stop for Pools and Spas.  
         [0040]      FIG. 6A  shows details of remote monitoring components. 
     
    
       [0041]     Details of sources: Nunn electric 622 Morrow st. Austin, Tex. 78752 Johnstone Supply 3007 Longhorn Blvd. Austin, Tex. 78758 Fox Electric Supply 3901 G st. Philadelphia, Pa. 19124  
         [0042]     Intellicode™ is a trademark of Genie® company.  
         [0043]     Genie® is a registered trademark of The Genie® company.  
       DETAILED DESCRIPTION OF THE INVENTION  
       [0044]     A preferred embodiment of the Enhanced Safety Stop for Pools and Spas is illustrated in  FIG. 1 . A spa  123  is shown with an emergency cutout switch  101  mounted on a rail post  121 . The switch  101  is mounted with easy view and access of all persons in the area of the spa. By placing switch  101  near the pool or spa should an emergency occur (e.g. a person held against a drain with suction) anyone nearby could disable the pump creating the suction by pressing switch  101 . The switch  101  is connected by a radio transmitter (shown in  FIG. 2 ), and enabling wireless controller to a switch box enclosure  102 . The enclosure  102  is also connected to a system line voltage over a cable  150  connected to a site fuse panel  124 . A variety of configurations can be set up depending on the requirements of the host system. A typical commercial installation of pumps and valves  125  is shown. When additional loads are to be accommodated multiple enclosure  102  boxes of 3 loads each can be easily configured. A remote monitor  146  is shown in the upper left of  FIG. 1 . This would typically be placed up to  100  meters away at front desk of a motel where management personal could monitor if a shutoff was initiated.  
         [0045]     An additional view inside enclosure  102  is shown in  FIG. 2  for a high level description of the circuitry that comprises my Safety Stop for Pools and Spas. The enclosure  102  is a PVC junction box such as E789R from Nunn electric, Austin, Tex. Components on enclosure  102  are Reset switch  117  such as ABW-110-BGR, DPST from Allied Electronics. A by-pass switch  119  SPST from DigiKey is shown for by-pass selection of auto timer reset for the. Multiple penetrations  149  are shown at the bottom of enclosure  102  for input and output of power. Inside enclosure  102  is auto reset timer and remote monitor audio enclosure  143 . Positioned closely to enclosure  143  is Audio Alert remote transmitter  145  such as B9636 from Fisher-Price. Transmitter  145  listens for a audio signal from enclosure  143  and transmits this signal over antenna  147  to Audio Alert remote receiver  146  such as B9637 receiver from Fisher-Price of East Aurora, N.Y. (sold as pairs with transmitter  145 ). A transformer  127  such as P-8565 from Allied Electronics converts line voltage from 240 v AC to 24 v AC. A remote reset receiver  128  such as an Intellicode receiver from Genie company of Alliance, Ohio (sold with tranmitter  108  as transmitter/receiver pairs). Receiver  128  receives radio signals on antenna  130  from remote reset transmitter  108  with antenna  111  such as an Intellicode transmitter from Genie company of Alliance, Ohio. Transmitter  108  is mounted inside an enclosure  103  such as 1554KGY, PVC watertight enclosure and connected by a 2 wire cable  109  to reset switch  107  such as FSMRA 7 J,4P PTH momentary switch from DigiKey. The switch  107  is typically mounted on bottom of enclosure  103  to avoid unnecessary attention, and could be recessed. An additional remote cutoff receiver  132  is also shown with antenna  134  such as an Intellicode receiver from Genie company of Alliance, Ohio. The antenna  134  receives radio signals from remote cutoff transmitter  113  through antenna  115  such as an Intellicode transmitter from Genie company of Alliance, Ohio. The switch  101  is connected by a 2 wire cable  114  to transmitter  113 . The switch  101  is mounted to cover plate  105  (part of enclosure  103 ). The transmitter  113  mounts inside enclosure  103 , A contactor relay  129  such as LY2F-AC24 from Omron available from Allied Electronics provides power switching signal for remote reset. A similar contactor relay  131  is shown for power switching signal for remote cutoff. A contactor relay  133  such as T92P11A22-240 from Allied Electronics is shown for power switching from relay  129  and  131  signals. A similar contactor relay  137  is shown for direct control of power circuit  3 . Another similar cont actor relay  139  is shown for direct control of power circuit  2 .  
         [0046]     Additionally, a similar cont actor relay  135  is shown for direct control of power circuit  1 . A Barrier terminal  141  such as a ID89206 available from Summit Electrical Supply is provided for terminating incoming and outgoing power. A ground terminal buss  142  such as 10 lug ground strap from Square D corporation provides termination for line, motor, heater, and pump ground signals  
         [0047]     The enclosure  102  circuit is to be grounded to host system, all components should be grounded by best electrical practices as specified in NEC and comply with any local codes.  
         [0048]     The wiring block diagram of  FIG. 3  discloses the radio control components of my Safety Stop for Pools and Spas. The transmitter  108  will send information in a signal  159  (3 curved lines represent the radio signal) over antenna  111  when cable  109  transmits continuity when switch  107  closes contacts. This will typically be when operator desires to restart pump motors after a shutoff event. The signal  159  is received by antenna  130  and sent to receiver  128 . The receiver  128  has 24 VAC on line  151  and 24 VAC (neutral) on line  155 . A line  153  is has normally open contacts, when signal  159  is received contacts close and voltage is sent to relay  129  ( FIG. 4 ) initiating a restart. Returning to  FIG. 3 , the transmitter  113  will send information in a signal  161  over antenna  115  when cable  114  transmits continuity when switch  101  closes contacts. This will typically be done when someone identifies a threat or emergency as pool or spa drain. The signal  161  will be received by antenna  134  and sent to a cutoff receiver  132 . The receiver  132  has connections to 24 VAC on line  151  and 24 VAC (neutral) on line  155 . A line  157  has normally closed contacts and when antenna  134  receives information from transmitter  113  contacts are open to line  157 . This action will cause relay  131  ( FIG. 4 ) to drop out. Returning to  FIG. 3 , receiver  128  and receiver  130  are programmed to respond to only the programmed transmitter. Programming is discussed in operation section of this disclosure. While discrete transmitter/receiver pairs are shown and discussed an encoded multi-bit transmitter/receiver pair with two relays could do the same function. Specifically, with a small controller circuit for transmitter and receiver as discussed in Microchip application sheets; rfPIC12C509AF could substitute for transmitters  113  and  108  (programming rf PIC for multifinction) and a rfRX0920 could substitute for receivers  132  and  128 . However, this approach is only valid as it requires FCC certification and the devices (transmitters  113  and  108  with receivers  132  and  128 ) as disclosed are already certified for retro-fitting as remote controllers.  
         [0049]     Modification details of transmitter  108  are shown in  FIG. 3A . A circuit board  108 C is shown from bottom side with switch  107  connected (soldered) by lines  109  to switch solder point  163  and switch solder point  165 . These points are behind switch location point  167  (only switch on component side). These connection points  165  and  163  are parallel to the built in switch and allow remote input and integration of multiple transmitters. The polarity of the connections is unimportant. Modification of transmitter  113  is the same (circuitry is identical) when connecting switch  101  to function remotely.  
         [0050]     The modification of receiver  132  is shown in  FIG. 3B . The solder side of circuit board  132 C of receiver  132  is shown and a jumper  169  connects a point  171  to a point  173 . Jumper  169  is soldered to point  171  on solder side of circuit board. The point  173  is directly below output relay, normally open contact on component side of board. The point  171  is the trace connecting line  157  output line. The lines  151  and  155  are unmodified. The receiver  128  is not modified as the reset circuitry utilizes the normally open contacts on line  153 . These simple modifications will facilitate mounting of transmitters in an easily identifiable enclosure as required by statute and protect transmitters from weather, elements and mishandling. The receiver modification will allow off the shelf hardware to perform complementary functions with a minimum parts count.  
         [0051]     The switching control portion of Enhanced Safety Stop for Pools and Spas is shown in  FIG. 4 . The transformer  127  is connected to facility power over a line  181  (240 VAC) at a connection point  213  and a line  183  at a connection point  215 . The transformer  127  output 24 VAC to line  151  at a point  209  and line  155  at a point  211 . The switch  117  has line  155  connected at  156  and line  153  at point  235 . This configuration will allow relay  129  which has line  151  connected at point  229  to complete coil enabling at connection point  231  through either direct contact at switch  117  or remotely through line  153  from remote reset at switch  107  ( FIG. 2 ). An additional line  152  is provided for automatic restart. The line  152  originates from timer circuit shown on  FIG. 6 . Returning to  FIG. 4 , a short pulse (0.6 sec or greater) is received on line  152  when auto restart is enabled. Incoming power on line  181  connects to input connection  217  on relay  129  and line  183  is connected at input connection  219 . The relay  129  has an output  221  that connects to a line  225  and output  223  that connects to a line  227 , lines  225  and  227  will energize relay  133  when switch  117  or switch  107  ( FIG. 2 ) are pressed momentarily and power up the system. Returning to  FIG. 4 , the relay  133  also has connections to relay  131  over line  225  at connection point  255  and line  227  at connection point  253 . These connection points  253  and  255  are normally closed and will provide power to relay  133  after initial power up. The relay  133  receives line power over line  181  at connection  239  and from line  183  at connection  237 . The input to power relay coils is from line  151  on connection  257  and line  157  at connection  259 . The power from relay  131  is tied from output of relay  133 . A line  242  is connected to relay  133  at point  241 . The line  242  is connected to connection point  249  on relay  131 . A line  244  is connected to relay  133  at point  243 . The line  244  is connected to connection point  251  on relay  131 . The line  225  is connected to relay  133  at connection  247  and line  227  is connected to relay  133  at connection  245 . This configuration will allow power up and sustained operation until a signal from switch  101  sends a signal to receiver  132  ( FIG. 3 ), and returning to  FIG. 4  voltage is removed from line  157  causing relay  131  to drop out causing relay  133  also to drop out. Thus a remote cutoff is achieved.  
         [0052]      FIG. 5  shows the details of the output control portion of Enhanced Safety Stop for Pools and Spas. The coil portion of output relays  135 ,  137 , and  139  are controlled by signal lines  242  and  244  from relay  133  on  FIG. 4 . Returning to  FIG. 5 , the relay  137  connects to line  242  at connection  269  and line  244  connects at connection  271 . The relay  139  connects to line  242  at connection  281  and line  244  connects at connection  283 . The relay  135  connects to line  242  at connection  293  and line  244  connects at connection  295 . These  3  relays  135 ,  137 , and  129  thus have a common signal on lines  242  and  244  and will respond to one signal from switch  101  for remote cutoff. At barrier  141  lines  181  and  185  are tied together by jumper  182  for distribution. Additionally, lines  183  and  187  are also tied together by jumper  184  to facilitate control and distribution of power. The line  185  is connected to relay  135  at connection  291  and line  187  is connected to relay  135  at connection  289 . Thusly, power incoming over lines  181  and  183  form external input powers up switching control, output, and is available (for distribution to drive pump or motor from barrier  141 ) through the normally connected contacts on line  205  over connection  285  and line  207  over connection  287 . An input power line  189  connects to relay  139  at connection  279  and a input line  191  at connection  277  for powering a second pump or motor. The power coming into relay  139 . over line  189  on normally connected contacts to a line  201  at connection  273  and line  191  on normally connected contacts to a line  203  at connection  275 . The power for a second pump or motor is available from lines  201  and  203  at barrier  141 . A third power source is provided for by relay  137 . The relay  137  receives power over a line  193  on connection  265  and a line  195  on connection  263 . This power is available through the normally closed contacts of relay  137  at a connection  265  to a line  197  and at a connection  267  to a line  199 . The power for a third motor or pump is available at line  197  and line  199  on barrier  141 .  
         [0053]      FIG. 6  shows details of the auto reset timer and remote monitor portion of Enhanced Safety Stop for Pools and Spas in enclosure  143 . The left portion of  FIG. 6  shows the line  152  which supplies reset timer output to  FIG. 4 . Returning to  FIG. 6 , a single pole, single throw switch  119  (mounted on enclosure  102 ,  FIG. 2 ) is provided in line  152  for operating with or without auto reset timer function. Returning to  FIG. 6 , the line  151  supplies 24 VAC for operation of devices in enclosure  141 . The line  155  supplies 24 VAC neutral for operation of devices in enclosure  141 . The line  152  supplies signal from an optocoupler  403 , such as a Fairchild MOC3033M available from Digikey, output, pin  6  on a connection  409 . A output ground is provided for optocoupler  403  at a connection  411 . An input for optocoupler  403  anode, pin  1  is provided at a connection  405  and is tied to output of a timer  385  such as a LM555C/TO available from Digikey, on pin  3  at connection  399 . A circuit completing ground is provided on optocoupler  403  cathode, pin  2  through a resistor  401  such as a  249 Ω ¼ watt at a connection  407 . The timer  385  has a VDD supply on pin  8  at a connection  387  and on pin  4  at a connection  393 . The timer input trigger is on pin  2  at a connection  389  this line comes from a collector output  338  of a transistor  335  such as a 2N3904. The timer  385  also has pin  5  tied to ground at a connection  395  through a capacitor  379  such as a 0.1 μf 16V, electrolytic. The timer  385  additionally has pin  5  at a connection  391  tied to VDD through a resistor  383  such as a 10KΩ ¼ watt resistor and tied to pin  7  at a connection  397 , additionally, this line is tied to ground through a capacitor  301  such as a 47 μf, 25V, values such as these will cause about a 15 minute delay in auto reset pulse typically the pulse output of timer  385  in this configuration will be a pulse of 60 ms in duration output on connection  399  when switch  119  is closed. Such a delay is desirable when initiating a reset to ensure hazard causing cutoff has been cleared. When motor is shutoff suction is relieved at drain and trap freeing potential hazard. If different timing is desired values can be altered to specific application by following application sheets available from manufacturer or at Digikey. If auto reset is not desired switch  119  should be set in the open position. The line  157  is tied through a resistor  297 , such as a 1.5 kΩ ¼ W to a connection  301  on pin  1  of an optocoupler  299 , such as a PS2705-1 from NEC available from Digikey. The line  155  is tied on pin  2  of optocoupler  299  at a connection  303 . This configuration will monitor an emergency cutoff on line  157  and when a cutoff is sensed a signal from optocoupler  299  is transmited through output  4  on a connection  305  to pin  2 , at a connection  319 , the trigger of a timer  317 , such as a LM555C/TO. The connection  305  is also tied to VDD through a 10KΩ ¼ w pull up resistor  309 . The optocoupler  299  has an output ground, pin  3 , on a connection  307 . The timer  317  has additional inputs; an input connection  325  on pin  6 , and connection  327  on pin  7  has VDD tied through a 15MΩ ¼ w resistor  313 . Additionally, connection  325  is tied to ground through a blocking capacitor  311 , such as a 47 μf, 25v tantalum (high frequency requirement).  
         [0054]     The timer  317  has input directly from VDD on pin  8  at connection  329  and pin  4  at connection  323 . Also, a blocking capacitor  314 , such as a 01. μf, 16v ties pin  5  at connection  321 . The output of timer  317  on pin  3  has a connection  331  tied through a 240Ω, ¼ w resistor  333 . The timer in this configuration will typically produce a  60  second on signal to transistor  335 , at connection  334 , to transistor  335  base. The transistor  335  has emitter tied to ground at a connection  336 . The collector of transistor  335  has output  338  tied to connection  341  on horn  337 , such as a Sonalert MSR516NJ, available from Digikey. The opposing side of horn is tied to VDD at a connection  339 . The horn  337  in this configuration will typically produce an audible signal with four pules per second, for one minute. A rectifier  343 , such as a 1N4001, available from Digikey has line  151  tied to base at connection  340  and emitter at connection  342 . The connection  342  is tied to emitter connection of Zener Diode  345  at connection  344 . The base of diode  345  at connection  346  is tied to a capacitor  347 , such as a 100 μf, 50v available from Digikey, and a resistor  349 , such as a 249Ω, ¼ w resistor. The other side of capacitor  347  is tied to line  155 . The other side of resistor  349  is tied to a voltage regulator  355  such as a LM7806 available from Digikey at pin  1  through connection  357 . Additionally, resistor  349  is tied to a capacitor  351 , such as a 100 μf, 50v available from Digikey. The other side of capacitor  351  is tied to line  155 . Also, resistor  349  is tied to a zener diode  353 , such as a IN4749A, 24v, 1 w at an emitter  352 . The diode  353  has base  354  tied to line  155 . The regulator  355  has pin  2  tied to line  155  at connection  359 . The output of regulator  355  has pin  3  tied to VDD and a line  413  at connection  361 . The regulator  355  will typically produce 6 VDC in this configuration. The connection  361  is tied to line  155  through a blocking capacitor  363 , typically a 47 μf, 25v capacitor.  
         [0055]     The remote monitor function details are shown in  FIG. 6A . The remote monitor function consists of a microphone with transmitter  145  and a speaker with receiver  146 . The transmitter  145  is typically mounted internal to enclosure  102  ( FIG. 2 ) near enclosure  143 . This will allow the horn  337  to be heard by a microphone  367  in transmitter  145 . Returning to  FIG. 6A  an antenna  147  transmits radio frequency signals to corresponding receiver  146  through a receiving antenna  148 . The transmitter  145  has an on/off switch  373 . A LED  369  provides indication of on status. A 6v power line  366  is to be connected to line  413  shown in  FIG. 6 . Returning to  FIG. 6A  a ground line  368  should be connected to line  155  shown in  FIG. 6 . The receiver  146  receives power from line power over plug  374 . An on/off/volume switch  376  is shown for switching power and adjusting volume of received signals on receiver  146 . A speaker  377  provides audio signals when received from transmitter  145 . A visual display  375  provides a visual cue coupled with audio levels for additional signaling when an emergency has occurred. While specifics are discussed the intent is to provide a Safety Stop device for Pools and Spas. This controller incorporates these features; 
        Simple installation with reliable radio connections,     Reduced maintenance with sealed containers around batteries and connections, increasing battery reliability,     Improved situational awareness, giving information to remote operators,     Enhanced convenience with operators choice of reset methods,     Increased flexibility with operator or manual reset options for specific situational needs,     Maximum safety with easily identified input with fewer placement restrictions,     Low volume design approach with enabling wireless controllers,     Large volume design approach with discrete wireless devices.        
 
         [0064]     All resistors are 5% unless stated otherwise. All capacitors are electrolytic unless stated otherwise.  
         [0000]     Installation  
         [0065]     The following steps will accomplish installation of my invention Safety Stop, all NEC and local code rules and procedures should be consulted prior to installation and followed. 
        1. Referring to  FIG. 1  mount enclosure  102  near pump equipment and panel  124 ,     2. With power removed from load  125  disconnect associated power cables from panel  124 ,     3. Route supply power from panel  124  for main or number  1  motor to barrier  141  supply side connecting power supply line to connection  181 , corresponding return line to connection  183 , and ground line to open screw terminal on ground bar  142  (See  FIG. 5  for barrier details).     4. Using 10 AWG solid core wire to make and install a jumper  182  from connection  181  to connection  185 .     5. Using 10 AWG solid core wire to make and install a jumper  184  from connection  183  to connection  187      6. Supply power to main or number  1  motor by terminating power supply side wire connection  205  on barrier  141  on  FIG. 5 , also terminating return side wire at connection  207 , and ground line should be terminated at an open screw terminal on bar  142  on  FIG. 2 .     7. Connect power to main or number  1  motor from enclosure  102  as directed by manufacturer and local codes     8. A second motor, pump, or heater should be connected in a similar manner, referring to  FIG. 5  with power input at connection  189 , also a returning line connection  191 , and a ground line should be terminated at an open screw terminal on bar  142  on  FIG. 2 .     9. Supply power to a second motor, pump, or heater by terminating power supply side wire connection  201  on barrier  141  on  FIG. 5 , also terminating return side wire at connection  203 , and ground line should be terminated at an open screw terminal on bar  142  on  FIG. 2 .     10. A third motor, pump, or heater should be connected in a similar manner, referring to  FIG. 5  with power input at connection  193 , also a returning line connection  195 , and a ground line should be terminated at an open screw terminal on bar  142  on  FIG. 2 .     11. Supply power to a third motor, pump, or heater by terminating power supply side wire connection  197  on barrier  141  on  FIG. 5 , also terminating return side wire at connection  199 , and ground line should be terminated at an open screw terminal on bar  142  on  FIG. 2 .     12. When power has passed inspection to NEC and local codes enable power from panel  124  press restart button  117  and start motors, pumps, or heaters (auto timer will start system equipment  125  connected in 15 minutes if restart switch  117  is not pressed).     13. Referring to  FIG. 2 , program transmitter  113  and receiver  128  and transmitter  108  and receiver  132  in pairs following manufacturer instructions.     14. Referring to  FIG. 6A  turn on switch  373  on transmitter  145  and assure LED  367  has illuminated.     15. Mount switch  101  to post or wall in open access to spa or pool.     16. Referring to  FIG. 2  press switch  101  button to switch on enabling wireless controller and confirm that power through enclosure has been cutoff.     17. Referring to  FIG. 6A  position receiver  146  where it will be monitored and plug connector  374  into standard wall outlet (120V). Turn switch  376  until the alarm is audible through speaker  377  and display  375  visual indication can be observed     18. Referring to  FIG. 2  press switch  108  button and confirm that power has restarted and alarm cutoff.     19. Close all cases and enclosures, system should operate without intervention except for checking batteries annually. 
 
 Conclusions, Ramifications and Scope 
       
 
         [0085]     Accordingly, the reader will see that the Safety Stop Device for Pools and Spas of this invention can be used to comply with NEC and improve safety for public usage. In addition the incorporation of common electrical parts and enclosures affords simple installation and low costs. Furthermore, the Safety Stop Device for Pools and Spas has the additional advantages in that. 
        a. provides a device to immediately halt operation of all pumps and heaters,     b. provides a reset that is separate from shut down switch to avoid misuse,     c. provides an electrically safe shut down of halt operation,     d. provides a positive halt to remove confusion or indecision,     e. provides a device that can be expanded to include multiple devices,     f. provides a device that can be easily installed, to provide a radio remote cutoff to simplify installation,     g. provides a radio remote reset to simplify system reset,     h. provides a radio remote alert to notify responsible individual,     i. provides a self contained auto reset function        
 
         [0095]     Although the description above contains much specificity, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments of this invention. For example the device can service small application where only one or two loads are made safe by reducing relays. Larger demand applications can be accomplished with modular addition of enclosure  102  and circuitry, etc.  
         [0096]     Thus the scope of the invention should be determined by the appended claims and their legal equivalents, rather than by the examples given.