2-channel isolated barrier, 24 V DC supply (loop powered), Logic input 15 V DC ... 30 V DC, non-polarized, Relay contact output, 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: 15 ... 30 V DC , loop powered, Type: 2 x logic input, Type: 2 x relay (change-over contact)