{"product_id":"liftmaster-adv-control-rel-device-w-bbu","title":"LM21-AFCB Advanced Fire Control Release Device w\/ BBU","description":"\u003cp class=\"richp\"\u003eThe AFCB release device is designed to be used in conjunction with a standard commercial door operator to provide a fully automated door closing system. For use with motorized doors incorporating a reversing electric safety edge, this 120VAC device can power up to 4 smoke detectors and 2 horn\/strobes. This system combines state-of-the-art functionality and advanced features typically found on special-order fire door operators.\r\u003c\/p\u003e\u003cp class=\"richp\"\u003eFeatures include: \r\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUL864\/ULC-S527\/S533 Listed \r\u003c\/li\u003e\n\u003cli\u003eProgrammable DIP switch delay setting – either 10, 20, 30, 60 second delay of door release to permit passage clearance\r\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"richp\"\u003ePlus:\r\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInternal battery backup system\r\u003c\/li\u003e\n\u003cli\u003eObstruction cycling – working in conjunction with the door’s electrical safety edge reverses the door if an obstruction is encountered\r\u003c\/li\u003e\n\u003cli\u003eMotor voltage sensing\r\u003c\/li\u003e\n\u003cli\u003eTest key switch – permits floor-level testing of the system\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHAMBERLAIN","offers":[{"title":"Default Title","offer_id":46371990339722,"sku":"LM21-AFCB","price":1410.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/7978\/5354\/files\/LM21-AFCB.jpg?v=1749956057","url":"https:\/\/www.rsoperators.com\/products\/liftmaster-adv-control-rel-device-w-bbu","provider":"R\u0026S Automation, Inc.","version":"1.0","type":"link"}