{"product_id":"schlage-621bk-da-delayed-action-button-switch-single-gang","title":"Schlage 621BK Da Delayed Action Button Switch Single Gang","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHLAGE 621BK DA is a single-gang delayed action button switch designed for low-voltage access control and door release applications. The button features a 0 to 60 second adjustable delay, allowing the door latch or electric strike to remain released for a set interval after activation. The black button finish measures 1.25 inches and mounts in a standard single-gang electrical box. This device is typically installed by licensed electricians or access control technicians as part of a building entry or egress system.\u003c\/p\u003e\n\u003cp\u003eThis button switch is suited for commercial and light industrial access control installations where a timed door release is required. Common applications include ADA-compliant automatic door openers, electric strike systems, and magnetic lock egress points. The delayed action function supports code-compliant egress timing requirements in controlled-access corridors, vestibules, and secure entry points.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable delay range of 0 to 60 seconds for flexible egress timing\u003c\/li\u003e\n  \u003cli\u003eBlack button finish for a clean, professional appearance in commercial installations\u003c\/li\u003e\n  \u003cli\u003eSingle-gang form factor fits standard electrical boxes\u003c\/li\u003e\n  \u003cli\u003e1.25 inch button size provides a clear, accessible actuation surface\u003c\/li\u003e\n  \u003cli\u003eDesigned for low-voltage access control circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation component for single-gang access control button applications in commercial door control systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician or qualified access control technician. De-energize the access control circuit and confirm zero voltage at the wiring terminals before wiring or servicing. Mount in a standard single-gang electrical box per local electrical codes and NEC guidelines. Verify delay timing settings match the egress compliance requirements for the specific installation before commissioning.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eButton Size\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay Range\u003c\/strong\u003e: 0 to 60 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGang Size\u003c\/strong\u003e: Single Gang\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCHLAGE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 621BK DA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHLAGE","offers":[{"title":"Default Title","offer_id":68655667708210,"sku":"621BK DA","price":726.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2def3e6820452403f56f37cd5b2daab8.webp?v=1794498735","url":"https:\/\/voomisupply.com\/products\/schlage-621bk-da-delayed-action-button-switch-single-gang","provider":"Voomi Supply","version":"1.0","type":"link"}