... from RTU5010 is the GSM Controller RTU5011with 8 Digital NC/NO inputs,8 relay drivable Outputs, 4 Analog inputs ... sensor, motion sensor, temperature sensor, water overflow sensor, AC power failure sensor, oil pressure sensors, etc. A ... Controller RTU5010/RTU5011:>>UP TO 8 NC/NO inputs, connect dry contact NC NO device>>UP TO 8 Relay outputs ... UP DOWN remote control,24V DC Switch,NC NO sensor control