... 3.7V 800mAH home security system with Lcd touch screen Feature:1. Touch keypad; Big LCD displays2. GSM+PSTN dual network. ... Password + Reset + Alarm History + Status History4. 30 wireless zones + 8 wired zones, every zone attribute, name, bypass, alarm delay, intelligent ... information, AC power off and recover, Low voltage, test)8. Support wireless “ding-dong” doorbell function 9. Alarm priority ...