... through RS485 interface Modbus/RTU protocol. DIN-Rail mounting temperature controller& transmitter CH-3000 Main Specifications:PID ... DIN-Rail controllerMuti input singnal:TC,RTD,mA,Volts Thermocouples ... ( K, J, E, S, B, R, N, T) RTD's ( pt100. cu50) Linear signals ... 116*100*22.5mm RS485 DIN-Rail mounting temperature transmitter