... Resolution: ±0.1 engineering unitChannels: From channels 1 to 3, alternate displayEngineering unit : 3 preset units, such as °C, %RH, Pa, ... output signals: 3×4~20mA /0~10VRelay output: 1×SPDT, 1A/30VDC, 0.5A/125VACRS485 Communication: modbus RTU, read/write, 9600 ... , support circulating records of historical data and can be read out through the communication interfacePower Consumption: 15 VA Terminals: ...