ABB Jokab Safety 2TLA010053R0400Product Attribute Attribute Value Series Sentry Series UPC Code 88861459223 Overview Sentry Series Safety Relays SSR42 is a safety relay with relay outputs, 2 NO + 2 delayed NO, and a +24 VDC supply voltage. SSR42 is used with safety devices with contacts, 1 or 2 channels , and safety devices with OSSD outputs. The reset function, automatic or manual, is set with a switch on the front. The two delayed NO relay outputs have an OFF delay time of 1,5