Pepperl+Fuchs, SMART Current Driver, 2-channel isolated barrier, 24 V DC supply (Power Rail), Current output up to 650 Ω load, HART I/P and valve positioner, Line fault detection (LFD), Accuracy 0.1 %, SIL 2 (SC 3) acc. to IEC/EN 61508, Housing width: 20 mm, Number of channels: 2-channel, Transfer direction: to the field, HART communication, Test sockets, Safety Integrity Level (SIL): SIL 2, Rated voltage: 19 … 30 V DC, Signal: 2 x 4 … 20 mA, Line fault detection, Field device: 2 x I/P converters