{"product_id":"lcn-sem7840-689-recessed-wall-mount-magnet-low-profile-2-5-8-pocket-depth-aluminum-powder-coat-finish","title":"LCN SEM7840 689 Recessed Wall Mount Magnet, Low Profile, 2-5\/8\" Pocket Depth, Aluminum Powder Coat Finish","description":"\u003ch2 id=\"product_details\"\u003eLCN SEM7840 689 Recessed Wall Mount Magnet, Low Profile, Powder Coat, 2-5\/8\" Pocket Depth Mounting, Aluminum Finish\u003c\/h2\u003e\n\u003cp\u003eThe LCN SEM7840.689 Recessed Wall Mount Magnet is a low-profile, fail-safe electromagnetic door holder engineered for commercial fire and smoke barrier applications requiring a 2-5\/8\" pocket depth. Delivering 35 lbs. of holding force, this tri-voltage unit operates on 12VDC, 24VAC\/DC, or 120VAC, making it ideal for integration with fire alarm and life-safety systems in hospitals, schools, and government facilities. UL listed for labeled fire doors and smoke barrier doors, the SEM7840 releases automatically upon power loss to maintain code compliance and safe egress. Finished in durable 689\/US28 aluminum powder coat and built to Grade 1 standards, this recessed wall-mounted LCN door magnet provides dependable performance, clean architectural aesthetics, and flexible installation for high-traffic commercial environments.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eTri-voltage design with 35lbs. of holding force\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow profile recessed wall-mounted\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNow available armature extensions from LCN\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSEM 7840 magnets are shipped with die cast housing, cover, armature and WMS screw pack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for use in pocket door installations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUL listed for smoke barrier or labeled fire doors\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDepth of Pocket at Magnet Mounting Location\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 66.065%;\"\u003eSEM 7830\u003c\/td\u003e\n\u003ctd style=\"width: 33.574%;\"\u003e4-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 66.065%;\"\u003eSEM 7840\u003c\/td\u003e\n\u003ctd style=\"width: 33.574%;\"\u003e2-5\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 66.065%;\"\u003eSEM 7850\u003c\/td\u003e\n\u003ctd style=\"width: 33.574%;\"\u003e3-5\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cspan\u003eProduct Specs\u003c\/span\u003e\u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"width: 99.9786%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eManufacture\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eLCN\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eSKU\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eSEM7840.689\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eBAA Qualified\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eGrade\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eGrade 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eCommercial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eLimited Warranty \u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eUnit of Measure \u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e689\/US28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eFinish Description\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eAluminum Powder Coat \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cspan\u003eTechnical Specs\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable width=\"100%\" style=\"width: 99.9786%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eAMP Draw \u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e.020A at 24VACDC\/120VAC, .030A at 12VDC\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eArmature Size\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e1-5\/8\" Projection\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eFunction\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003eFail Safe\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eOperating Voltage \u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e12VDC \/ 24VAC\/DC \/ 120VAC\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eHolding Force\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e35 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.247%;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"width: 70.4514%;\"\u003e Electromagnetic Door Holders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- End of Certifications --\u003e","brand":"LCN","offers":[{"title":"Default Title","offer_id":43412219560142,"sku":"SEM7840689","price":541.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3493\/4478\/files\/Untitleddesign-2026-03-03T135613.311_1d084b57-5c66-4cce-87d7-bd393a0f5c4e.png?v=1772564199","url":"https:\/\/qualitydoor.com\/products\/lcn-sem7840-689-recessed-wall-mount-magnet-low-profile-2-5-8-pocket-depth-aluminum-powder-coat-finish","provider":"QualityDoor.com","version":"1.0","type":"link"}