... sensor, temperature sensor, water overflow sensor, AC power failure sensor, oil pressure sensors, etc. A GSM Remote Terminals’ (GSM RTU). It can work with the ... Overflow Level 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, etc ...