1. wireless gsm security alarm system 2. 8 wireless defense zones 3. every zone ... could connect with 10 sensors 4. LCD display Wireless GSM Security Alarm Systems Function Instruction:1) Built-in English/Chinese language ... , Home Arm, Remote Arm;14) SOS, fire, gas, door, hall, window, balcony, and perimeter places alarm;15) Real-time, delay, 24 ...