... Touch keypad; Big LCD displays2. GSM+PSTN dual net Li-Ion backup battery 3.7V 800mAH home security ... and disable alarm call and alarm SMS Technical Parameters:l Working power: AC=100~230V, DC=12V 1Al ... Standby: around 24 hours, Full charging time: 8hours l 2-Band GSM: GSM900/1800Mhz(4-Band is optional: 850 ... 5%~80%Standard package list1 Main alarm set, 2 wireless remote control,1 pir sensor,1 door sensor ...