SDC 1581SNDV Exit Check Delayed Egress EMLock, Single, Mini-Delayed Egress Lock, 650lbs.

The SDC 1581SNDV ExitCheck is a 650 lb mini integrated delayed-egress electromagnetic lock designed for controlled exit doors in healthcare, long-term care, and commercial facilities. Featuring a fixed 15-second egress delay, a 1-second nuisance delay, and NFPA 101 operating configuration, the lock combines an adjustable door movement sensor, subdued audible alarm, and LED status indication. Its auto-sensing 12/24VDC input, emergency release interface, and 628 clear-anodized aluminum finish support compact, code-compliant delayed-egress installations when approved by the local authority having jurisdiction.

SDC 1581SNDV ExitCheck 650 lb Mini Delayed-Egress Electromagnetic Lock

The SDC 1581SNDV ExitCheck Mini Integrated Delayed-Egress Lock combines electromagnetic door security, delayed-egress control, and local alarm annunciation in a compact surface-mounted assembly. Part of Security Door Controls' 1581S Series, this single-door magnetic lock provides 650 pounds of nominal holding force and is configured for a fixed 15-second release delay under NFPA 101 operating requirements. When unauthorized exit is initiated, the system activates its audible warning and begins the required release sequence, allowing personnel time to respond before the door unlocks. The integrated design eliminates the need for a separate delayed-egress controller in supported installations. Its 628 clear-anodized aluminum finish provides a clean architectural appearance suited to healthcare facilities, assisted living centers, commercial buildings, and other controlled-access environments.

The 1581SNDV operates on automatically detected 12VDC or 24VDC power, with manufacturer-specified current consumption of 600 mA at 12VDC and 350 mA at 24VDC. Its NFPA 101 ND operating mode incorporates a fixed 15-second egress delay and 1-second nuisance delay, helping distinguish incidental door movement from an intentional exit attempt. A built-in, adjustable proximity-based activation sensor detects door movement after the mechanical latch is released, while external activation is supported through compatible exit device switches or request-to-exit bars. The integrated audible annunciator uses short intermittent tones during alarm activation and longer tones following lock release, with multicolor LED indicators displaying secured, alarm, bypass, and unlocked conditions. The lock also provides alarm and lock-secure status outputs for connection to compatible security monitoring equipment.

The SDC 1581SNDV features a compact aluminum lock housing measuring 10 inches long, 2-1/8 inches high, and 2-3/8 inches deep, with a separate 8 x 1-3/4 x 7/8-inch armature plate and an approximate assembly weight of 7 pounds. Its interlocking quick-mount assembly, adjustable armature sensor plate, and supplied 5-foot power cable simplify installation on properly prepared interior doors and frames. The electromagnetic lock supports integration with compatible access control systems, remote annunciators, and patient monitoring equipment. A separate remote reset and request-to-exit control, such as an approved keyswitch or keypad, is required for normal system operation. Optional door position status and bond alert monitoring are available through separately specified configurations, including the 1581SNDVD variant with door position sensing.

The SDC 1581SNDV is designed for delayed-egress applications in assisted living facilities, hospitals, behavioral healthcare environments, commercial properties, and controlled perimeter exits. Its NFPA 101 delayed-egress configuration requires manual resetting after an alarm and supports selectable locked or unlocked behavior upon restoration of power, subject to applicable installation requirements. The device incorporates an emergency release input that allows immediate unlocking when activated by the building's properly connected fire and life safety system. Manufacturer documentation identifies UL 294, UL 10B, UL 10C, ULC-S104, and ULC-S533 among the standards and listings associated with the 1581S product family. For paired-door applications, two compatible 1581S locks can operate together using an optional tandem cable kit. With its 650 lb holding force, integrated egress monitoring, subdued alarm, and compact mounting profile, the 1581SNDV provides controlled exit functionality for facilities where life safety compliance and managed door access are both essential.