{"product_id":"sdc-55-au-heavy-duty-cylindrical-electric-strike","title":"Sdc 55-AU Heavy Duty Cylindrical Electric Strike","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SDC Security Door Controls 55-AU is a heavy duty cylindrical electric strike designed for commercial and institutional access control applications. It provides fail-secure or fail-safe locking by releasing the keeper when an electrical signal is received, allowing the door to open without retracting the latch manually. At 4.875 inches in overall length, this strike fits standard cylindrical lockset preparations and is rated for high-cycle, high-traffic installations. Security hardware installers and licensed low-voltage access control technicians are the primary trades who specify and install this unit.\u003c\/p\u003e\n\u003cp\u003eThe 55-AU is suited for commercial doors in office buildings, schools, healthcare facilities, and institutional environments where electric latch retraction or electric strike access control is required. It is designed to work with standard cylindrical locksets in a typical door-frame application. This strike is sold as a single unit and is appropriate for new installation or as a direct replacement in existing electric strike cutouts of the same frame preparation size.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy duty cylindrical electric strike rated for high-traffic commercial applications\u003c\/li\u003e\n  \u003cli\u003e4.875-inch overall length fits standard cylindrical lockset door prep cutouts\u003c\/li\u003e\n  \u003cli\u003eElectric latch release allows access without manual latch retraction\u003c\/li\u003e\n  \u003cli\u003eDesigned for integration with access control systems, intercoms, and credential readers\u003c\/li\u003e\n  \u003cli\u003eSold as a single unit for straightforward specification and ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-install electric strike for commercial doors equipped with standard cylindrical locksets and compatible electric strike frame cutouts.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed access control or low-voltage technician familiar with electric hardware and applicable local codes. Disconnect all power to the access control circuit before wiring or replacing the strike. Verify that the door frame preparation and strike cutout dimensions match the 55-AU before installation. Confirm power supply voltage matches the strike specifications prior to energizing the circuit.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Cylindrical Electric Strike\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity Per Unit\u003c\/strong\u003e: 1\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: SDC Security Door Controls\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 55-AU\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SDC","offers":[{"title":"Default Title","offer_id":51686148342066,"sku":"55-AU","price":741.82,"currency_code":"USD","in_stock":true}],"url":"https:\/\/voomisupply.com\/products\/sdc-55-au-heavy-duty-cylindrical-electric-strike","provider":"Voomi Supply","version":"1.0","type":"link"}