... the other 3 inputs can be used as door sensor, motion sensor, temperature sensor, water overflow sensor, AC power failure ... and other applications. RTU5011 I/O interface>>>>>GSM Controller RTU5010/RTU5011 suitable for: 1. Security Alarm System application; 2. Supervision ... Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass Break Sensor, ...