We are offering pid controller. (proportional integral derivative controller) universal inputupto 5 setpoints, 420 ma + 4 relayssolated 0/420 ma or 0-10 v dc for control / retransmission outputrs485 / modbus rtu85265 v ac smpsautotuning : from cold start at setpoinauto / manual selection pid, proportional and onoff control pid versionsstandard - relay or analog control outputvmd open + close relay outputs.