... *OEM OMD mobile call GSM alarm system,home guard gsm sms alarm system,wireless calling system,gsm auto dialalarm system,gsm alarm system wireless alarm system,gsm alarm systemFeatures: 1. Touch keypad ... current Armed status;2. GSM 2/4 Band Net transmission, phone audible alarming and SMS alarming; 3. 15 wireless zones. Support 2 more wired zones ...