... record SMS alert for power off alarm history check Hot selling GSM House Alarm System with Voice Record, LCD ... , gas, door, hall, window, balcony, and boundary places alarm;13. Real-time, delay, 24 hours, bypass defense zones ... Built-in AAA NI-HI rechargeable battery: make alarm when power off.Components listMain panel 1 pc, ... 2013; Booth: 35038, 35040 Hot selling! GSM House Alarm System Motion Sensor