Description and Main functions 1. Wavecome GSM module. 2.8 Wireless zones (1 wireless SOS zone, 1 wireless fire alarm zone, the other 6 wireless zones can be defined by user), 1 external power failure alarm zone and 2 wired zones. 3. You can connect wired & wireless PIR sensor, door/window contact, smoke detector, gas leakage detector, glass break sensor etc. Each wireless zone can match ...