... and send SMS with alarm system wireless/wired gsm intruder alarm1, wireless/wired gsm intruder alarm2, backup battery for home alarm3, ... intelligent English message for gsm intruder alarm 7, Have the two-way communication, to speak with people who are on spot8 ... house, villa, warehouse, shop and other places. Technical parameters of gsm intruder alarm*Input Voltage: DC12V/1A *Standby Current: <55mA * ...