... , it can transmit data from apparatus (thermometer, humidity meter, electric meter, flow meter) to user or monitoring center by SMS(GSM DTU). ... /RTU5011 suitable for: 1. Security Alarm System application; 2. Supervision and monitoring alarm;3. Automatic monitoring system;4 ... Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass Break Sensor, Shock Sensor, Power failure ...