2-channel isolated barrier, 24 V DC supply (loop powered), Current input/output 4 mA ... 20 mA, transmitter power supply, Accuracy 0.1 %, Reverse polarity protection, Up to SIL 2 (SC 3) acc. to IEC/EN 61508, Housing width: 20 mm, Number of channels: 2-channel, Transfer direction: to the field / to the control system, Reverse polarity protection, Safety Integrity Level (SIL): SIL 2, Systematic capability (SC): SC 3, Rated voltage: 5 ... 35 V DC , loop powered, Signal: 2 x 4 ... 20 mA