... outputs(12V-24V),4 Analog Inputs and up to 8 NC/NO inputs and RS232 Serial Port. It allows you ... Different from RTU5010 is the GSM Controller RTU5011with 8 Digital NC/NO inputs,8 relay drivable Outputs, 4 Analog inputs, ... GSM Controller RTU5010/RTU5011:>>UP TO 8 NC/NO inputs, connect dry contact NC NO device>>UP TO 8 Relay outputs ... ,Temperature UP DOWN remote control,24V DC Switch,NC NO sensor control