Pepperl+Fuchs, Switch Amplifier, 1-channel isolated barrier, 115 V AC supply, Dry contact or NAMUR inputs, Relay contact output, Line fault detection (LFD), Reversible mode of operation, Up to SIL 2 acc. to IEC 61508/IEC 61511, Housing width: 20 mm, Number of channels: 1-channel, Safety Integrity Level (SIL): SIL 2, Rated voltage: 103.5 … 126 V AC , 45 … 65 Hz, Field device: NAMUR sensor, Field device [2]: volt-free contact, Line fault detection, Type: 1 x relay (change-over contact), Reversible mode of operation