Napco GEM-TRANS2 Window/Door Transmitter, 2 Point

Use these Wireless Window/Door Transmitters to protect anything that opens and closes, including doors, windows, jewelry cases, gun cabinets and more! These sensors use a magnetic reed-switch system to detect intrusion. When the magnet is separated from the sensor (when armed), the transmitter immediately sends a wireless alarm signal to the system's control panel. These compact, low-profile sensors install in minutes! Just mount them along the door or window frame. Each transmitter requires a 3V lithium battery (included). Each transmitter requires a 3-volt DL123A lithium battery (included), which typically lasts four years. When the battery power is running low, you'll get a low battery message on the security system's LCD keypad, identified by the zone and transmitter number. Each transmitter uses 2 points out of the wireless receiver's 16-point capacity.






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