... of central air-conditioning meters adopts digital temperature sensor, the temperature accuracy is improved to 0.5 ... total heat/cold, time, inlet water temperature, return water temperature, temperature difference , transient flow, the current date ... supplyDC12V or AC220VCommunication portRS485Use environment-25oC-55oCStorage temperature-40oC-60oCEnvironment levelGrade CCaliberDN80-DN350MMFunctions1. Use ...