SafeSeries SIL relays are 22 mm wide with cULus approvals, single and dual channels, pluggable field connectors, -25 ˚C to 50 ˚C ambient temperature range and DIN-rail mounting for switching safety-related circuits up to SIL 3 level per IEC61508. They accept 24-Vdc safety inputs and offer a monitoring circuit option with input voltages from 24 to 230 Vac/dc.