Switch Amplifier KFA6-SR-2.3L.FA, Signal type, K-System, 2-channel, 115/230 V AC supply, 3-wire PNP/NPN sensor or push-pull input, Relay contact output, DIP switch selectable functions, Minimum/maximum control, Up to SIL 2 acc. to IEC/EN 61508 / IEC/EN 61511