... USB GSM Security Alarm System with sms intelligent controllerto switch on/off home appliance and equipment by a ... speaker; Supports armed, disarmed, inquiry status, switch on or off relay output by SMS Commands; ... Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass Break Sensor, Shock Sensor, Power failure sensor ...