1.GSM Alarm System with relay output 2. Got CE/FCC/CCC 3.OEM/ODM products ... set alarm ON, OFF , Monitor ,Output.7.Send SMS to set alarm ON, OFF , Monitor , Output .8.5 group phone + room number ... 12.1 relay output to power on camera when alarm.13.2 output for home appliances connection (lamp, cooker, air condition).14.SMS inform ... supply, 1 manual Hot selling GSM Alarm System with relay output (M3B)