Wago kty measuring transducer wago 857 820 the wago kty measuring transducer is optimized for kty sensors with all the common characteristics the kty temperature measurement converter converts the output temperature signal into an analogue standard signal this signal can be 0 20ma 4 20ma 0 10v 2 10v 0 5 1 5v 0 10ma or 2 10ma the device features 3 way galvanic isolation with a test voltage of 2 5 kv wago 857 820 kty measuring transducer