... phone network!STANDARD PACKAGE:* 1 x 7CH GSM remote control relay panel(GSM 850/900/1800/1900MHz Quad Bands ... GSM device an sms text message.Applications include the remote control of heating in holiday homes, lighting, engine pre-heaters, ... pumping stations, cabin heaters, resetting of remote servers, arming and disarming security systems, access control of gates and garage doors.ADVANCED FEATURES7 ...