... it can transmit data from apparatus (thermometer, humidity meter, electric meter, flow meter) to user or monitoring center by SMS(GSM ... Level Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, ... Remote Controller, GPRS RTU Data Logger, GSM Telemetry, Temperature Measurement Logger, Power Monitoring Alarm, GSM M2M Products Manufacturer ...