... menu,wireless strobe siren LCD Touchpad Home Wireless GSM AlarmDIY for home security system,include intruder,fire,emergency. ... Event history log,10 Second voice recording ability,gsm signal level check29 wireless zones (totally:116 ... &flash 110dB/0.3m1pc-Power adpater Tips For Home GSM Alarm System1. How Does System Work?A ... , you just need to buy a SIM card.B: Program your phone number into the alarm ...