1-channel signal conditioner, 24 V DC supply (loop powered), Logic input 20 V DC ... 26.5 V DC, non-polarized, Fail-safe relay contact output for de-energized and energized to safe function , Test pulse immunity, Up to SIL 3 acc. to IEC/EN 61508, Housing width: 20 mm, Number of channels: 1-channel, ETS function (energized to safe), DTS function (de-energized to safe), DPS function (dual pole switching), Safety Integrity Level (SIL): SIL 3