... call phone and send SMS with alarm system wireless/wired gsm intruder alarm1, wireless/wired gsm intruder alarm2, backup battery for home ... : 1, GSM network, no need telephone line2, 16 wireless zone and 4 wired zone for gsm intruder alarm3, can call 5 ... DC12V/1A *Standby Current: <55mA *Alarming Current: <450mA *Wireless Frequency: 433MHz, 2262/4.7MΩ *GSM Frequency: 900/ 1800/ 1900MHz or 850/900 ...