... lightSignal Output: 4~20mA current output, Pulse Output, RS-485, Hart, Profibus-DP Power Supply: 220VAC, 24VDC Converter Type: Compact, RemoteProtection ... LimitAmbient: Temperature: -25 ~ +60oC, Humidity: 5 ~ 90%Communication: RS-485 / Hart / Profibus-DP KTLDE Pharmaceutical/Milk Flow Meter