Locknetics M400 High Security Series Electromagnetic Lock

Protect critical entrances with the Locknetics M400 High Security Series electromagnetic lock, engineered for heavy-duty access control and reliable security monitoring. The M400 (M490) delivers a substantial 1,499 lb holding force and automatic 12/24V sensing to ensure consistent performance across commercial, institutional, and surveillance-driven installations. Installers save time thanks to the bayonet mount and a symmetrical, non-handed design that allows fast, accurate placement without holding the lock overhead.

For projects requiring status reporting and integration, the M490P “Plus” option adds a magnetic bond sensor (MBS), door position switch (DPS) and adjustable relock time delay (RTD), enabling immediate feedback to access control panels and monitoring systems. Polarity protection and low current draw make wiring straightforward, while optional mounting kits support top jamb, double door and Herculite glass door applications. Backed by a limited lifetime warranty on the magnetic coil, the Locknetics M400 is built to minimize downtime and maintenance for security teams. Choose the M400 for robust door security that integrates cleanly with your access control and surveillance ecosystem—order now or contact us for installation guidance.

• Delivers industry-leading security with a 1,499 lb (approx. 1,500 lb) holding force to protect high-risk entrances and sensitive areas
• Bayonet mounting and symmetrical, non-handed design speed installation and reduce labor time on site
• “Plus” models (M490P) provide magnetic bond sensor (MBS), door position switch (DPS) and relock time delay (RTD) for real-time monitoring and seamless access control integration
• Automatic 12/24V sensing and polarity protection simplify wiring and lower installation errors for reliable operation
• Durable construction with lifetime limited warranty on the magnetic coil assembly for long-term uptime in security and surveillance environments