... supply) by sending SMS commands. 5.Wireless Zone,Out-arm, Home-arm, Alarm with sound, silent alarm, 24-hour defense zone, Time-delay ... (6-digital password)is required to access to the GSM Alarm System to ensure more security. Technical ParametersGSM frequency:900/1800MHz or ... 1 gsm main panel, 1 wireless pir sensor, 1 pair of door magnetic/ sensor,1 outer alarm siren,2 remote control1 adapter1 ...