The WT100 is a general purpose, battery powered single-input transmitter for use with Normally Open and Normally Closed sensors and inertial vibration detectors.
A reed switch built into the unit can be used with a magnet (not supplied) to protect a door or a window. An on-board tamper switch triggers a tamper alert (channel 2) in the front cover is removed from the base.
A special timing circuit saves the 9-volt battery power by limiting the transmitting time. When the WT100 is triggered, it transmits for about 2 seconds, then inhibits itself for approx. one minute. If an input remains disturbed, the WT100 will keep transmitting signals for a 2-second duration each minute, until the input reverts to the undisturbed state.
The LED lights during the transmission period A special circuit continuously monitors the battery voltage. If this drops below about 7.5 Volts, the transmitter automatically transmits a low battery alert signal for 1-2 seconds, to activate a buzzer in the target receiver. Low battery signals are repeated at one-minute intervals for a few days, depending on the remaining amount of battery energy. The LED lights during each transmission, identifying the unit transmitting the low battery signal.