Nortek: Supervised Wireless Glass Break Detector Transmitter Glass break detector with a built-in transmitter, 15-foot 360 degree detection range, supervised for low battery and sends hourly status signals, compatible with Interlogix brand Simon, NX, and Concord Series systems. 2 Stage detector circuit 12ft/360 degree coverage Built-in glass break and RF test Battery life: 3 years, Battery: 2 x CR123A Detection range: 12ft. Transmitter range: up to 500 feet.