... RTU).It has multiple functions (analog input,relay output, digital input, digital output, pulse counting and wireless data communication, etc).It adopts ... u 4 optocoupler isolated outputs(10mA).u 8 Digital inputs(Voltage range:3.3V-24V). one of these input port can be ... extended protocol. u Acquisition data(8 analog inputs and 8 digital inputs) is reported periodically via RTU extended RTU protocal. u ...