The GRI DOOR ALERT/POOL ALARM uses a microprocessor to monitor the CLOSED LOOP magnetic reed switches, shunt/cancel button, battery and power supply voltages, and to provide the timing options. The re- cessed versions are designed to fit inside a single gang utility box, while the surface mount versions may easily be mounted to the wall of any structure.
The 289-1 and 289-2 versions offer a seven second delay in which an adult may open the protected door, shut it, and then press the shunt/ cancel button without the alarm sounding.
The 289-3 and 289-4 versions alarm instantly if the protected door is open before the shunt/cancel button is pressed.
All versions must be operated with a 12 volt externally supplied DC power source. An onboard 9 volt battery can be used, in which case the battery will perform a backup function should the externally supplied source fail for any reason. The GRI DOOR ALERT/POOL ALARM is designed to maintain a minimum sound pressure level.
