Pepperl+Fuchs, SMART Transmitter Power Supply 1-channel signal conditioner, 24 V DC supply (Power Rail), Input 2-wire and 3-wire SMART transmitters and 2-wire SMART current sources, Output 0/4 mA … 20 mA, Terminal blocks with test sockets, Up to SIL 2 acc. to IEC 61508, Rated voltage: 20 … 35 V DC