... zone could connect with 10 sensors 4. LCD display Wireless GSM Security Alarm SystemsFunction Instruction:1) Built-in English/Chinese ... Arm, Home Arm, Remote Arm;14) SOS, fire, gas, door, hall, window, balcony, and perimeter places alarm;15) Real-time ... function;16) Wireless coding: easy to add additional wireless accessories;17) Remote control Arm, Disarm, Monitor, and Intercom by phone;18) Event ...