Alarm Controls 600DLB Double Magnetic Lock, 600 lb per Door

The Alarm Controls 600DLB is a double-door electromagnetic lock with 600 pounds of holding force per door, designed for commercial access control systems. Featuring field-selectable 12/24VDC operation, integrated magnetic bond sensors, door status sensors, and bi-color status LEDs, it provides electronic locking and independent monitoring for both door leaves. Each magnet draws 505mA at 12VDC or 260mA at 24VDC. Its fail-safe operation, built-in arc suppression, and clear anodized aluminum finish support controlled entry and power-loss unlocking in compatible double-door installations.

Alarm Controls 600DLB Double-Door 600 lb Electromagnetic Lock with Bond and Door Status Monitoring

The Alarm Controls 600DLB Double Magnetic Lock provides electronically controlled locking for pairs of swinging doors using two electromagnets rated at 600 pounds of holding force each. Each magnet secures its corresponding door leaf by attracting a steel armature plate when energized, while removing electrical power releases the magnetic bond. The fail-safe, power-to-lock configuration supports access-controlled entrances requiring automatic unlocking during power interruptions. Unlike the standard 600D double magnetic lock, the 600DLB includes magnetic bond monitoring, door position sensing, and bi-color status indicators for supervising the condition of both doors. The assembly is designed for commercial offices, institutional facilities, and compatible interior double-door openings.

The 600DLB operates on field-selectable 12VDC or 24VDC power, drawing 505mA per magnet at 12VDC or 260mA per magnet at 24VDC. With both magnets energized, total current consumption is approximately 1.01A at 12VDC or 520mA at 24VDC. Each magnetic bond sensor provides SPDT relay contacts rated at 3A for reporting whether the corresponding electromagnet has established a secure bond with its armature. Separate door status sensors monitor the open or closed condition of each door leaf, allowing access control systems to distinguish a closed door from a securely locked opening. The bi-color status LEDs indicate magnetic bond conditions, while built-in arc suppression and low-residual-magnetism construction support immediate release when power is interrupted.

The Alarm Controls 600DLB features a clear anodized aluminum housing with a US28/628 finish, while its non-aluminum metal components are plated for corrosion resistance. The double-magnet assembly measures 19-3/4 inches long, 1-7/8 inches high, and 1 inch wide. Each armature plate measures 7-1/4 inches long, 1-1/2 inches high, and 5/8 inch thick. The included E-Z mount header bracket, mounting template, and self-drilling TEK screws simplify installation above compatible double-door openings. Optional accessories include AM3331 and AM3332 drop-down spacer plates for additional mounting clearance, along with compatible L-brackets, Z-brackets, and decorative dress covers. The lock operates at temperatures from 14 F to 131 F (-10 C to 55 C) and is intended for protected door installations.

The Alarm Controls 600DLB integrates with compatible electronic access control systems, including door controllers, credential readers, request-to-exit devices, and fire alarm release circuits. Its separate bond and door status outputs allow connected equipment to monitor magnetic locking conditions and detect door position changes. Manufacturer documentation identifies UL 294, UL 10C, CAN/ULC-S104, ULC-S527, and UL 864 certifications or listings for applicable installations. The 600DLB differs from the 600D by including integrated monitoring sensors and status LEDs, while the 600LB provides the corresponding monitored configuration for a single door. The assembly is backed by a limited lifetime manufacturer warranty. Installation requires a properly sized regulated DC power supply, compatible emergency release devices, and compliance with applicable fire, building, and emergency egress requirements.