... Used like a phone 5. Line priority alarm. Intelligent wireless GSM alarm system Home mobile call GSM alarm, you family electric police! With 7 ... numbers, when having detected some abnormal information such as smog, fire, or burglar, it will make alarms by calls or ... messageUsers can make calls by using keypad on alarm panel, just like a telephoneSOS, fire, gas, door, hall, window, balcony, and ...