... , total flow, velocity, flowrate percentage with back lightSignal Output: 4~20mA current output, Pulse Output, RS-485, Hart, Profibus-DP Power Supply: 220VAC ... / Lower Flowrate LimitAmbient: Temperature: -25 ~ +60oC, Humidity: 5 ~ 90%Communication: RS-485 / Hart / Profibus-DP KTLDE Pharmaceutical/Milk Flow Meter