2-channel isolated barrier, 24 V DC supply (loop powered), Current limit 45 mA at 12 V DC, Up to SIL 3 acc. to IEC/EN 61508, Housing width: 20 mm, Number of channels: 2-channel, Safety Integrity Level (SIL): SIL 3, Rated voltage: 20 ... 35 V DC , loop powered, Type: field device supply, Field device: 2 x Valve, Field device [2]: 2 x audible alarm, Field device [3]: 2 x visual alarm, Current: ? 45 mA, Voltage: ? 12 V