{"product_id":"allen-bradley-440r-s12r2-single-input-monitoring-safety-relay","title":"Allen-Bradley 440R-S12R2 Single Input Monitoring Safety Relay","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 440R-S12R2 Guardmaster Single Input Monitoring Safety Relay is a compact 24V DC safety relay designed to monitor a single input in safety circuits and deliver safety-rated control signals to machinery. As part of Rockwell Automation’s Guardmaster family, this SI device features a dual-channel universal input and provides safety outputs (OSSD) to drive safety-rated contactors or other safety devices. It also supports single-wire safety (SWS) communications between safety relays, enabling fault-detection and coordinated response across interconnected safety components such as emergency stops, gate interlocks, and monitored access switches. Designed for integration into standard industrial control panels, the 440R-S12R2 helps ensure that safety conditions are verified before enabling machine operation, making it a reliable choice for guarding applications in demanding environments.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46243455238378,"sku":null,"price":232.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-078.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/allen-bradley-440r-s12r2-single-input-monitoring-safety-relay","provider":"GTG Hardware","version":"1.0","type":"link"}