4-channel signal conditioner, 24 V DC supply (Power Rail), Output 600 mA per channel, Logic inputs, Common safety-oriented disable input, Line fault detection (LFD), Up to SIL 2 acc. to IEC/EN 61508, Housing width: 20 mm, Number of channels: 4-channel, Safety Integrity Level (SIL): SIL 2, Rated voltage: 20 ... 30 V DC, Type: logic input, Field device: 4 x Valve, Field device [2]: 4 x audible alarm, Field device [3]: 4 x visual alarm, Line fault detection, Current: ? 600 mA, Voltage: typ. 23.8 V