... , four wired defense zone3. The system supports the GSM cell phones, no need the fixed telephone line. 4 ... the recorded voice at first, call six phone numbers and send the short message (SMS) 6. The SMS ... , beams, panic buttons and so on, 160pcs in total. 11.Send the SMS to GSM alarm system to program, ... it is very easy and quick to be installed and operated 12. ...