Schlage M400 High Security Series Electromagnetic Lock

Protect critical openings with confident, professional-grade security. The Schlage M400 High Security Series electromagnetic lock combines a 1499 lb rated holding force with intelligent sensing and installer-friendly features to secure doors where reliability matters most. Designed for high-security applications, the M400 (M490P model) offers Magnetic Bond Sensor (MBS), Door Position Switch (DPS) and Relock Time Delay (RTD) for real-time monitoring and clean integration into access control, alarm and surveillance systems. Auto-sensing 12/24V input and polarity protection simplify low-voltage wiring and cut commissioning time for IT and security teams. The bayonet mounting and symmetrical, non-handed design reduce installation labor and ensure precise magnet placement on a wide range of doors, including Herculite and inswing configurations. Backed by a lifetime limited warranty, the M400 is engineered to lower downtime and maintenance costs while supporting stringent security and monitoring requirements. Ideal for data centers, corporate entrances, retail loss prevention and transit sites—specify the Schlage M400 electromagnetic lock to strengthen your access control strategy and improve overall site protection.

• Industry-grade 1499 lb holding force delivers proven high-security protection for server rooms, commercial entrances, and critical access points
• Intelligent monitoring with Magnetic Bond Sensor (MBS), Door Position Switch (DPS) and Relock Time Delay (RTD) for seamless integration with access control and surveillance systems
• Quick, installer-friendly bayonet mounting and non-handed, symmetrical design reduce install time and labor costs on any door orientation
• Automatic 12/24V sensing and polarity protection simplify wiring and reduce on-site troubleshooting for IT and low-voltage teams
• Durable construction and lifetime limited warranty provide long-term reliability and lower total cost of ownership for facility managers
• Compatible with delayed egress and specialized door types (Herculite, inswing), enabling flexible deployment across building security projects