Relay Module KFD0-RO-2, Signal type, K-System, 2-channel signal conditioner, 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, Reverse polarity protection, Up to SIL 2 (SC 3) acc. to IEC/EN 61508