Dortronics 43211-LU 4300 Series 2-Door Mantrap Interlocks, (2 Doors 1 Room) Door Locked 1 Door unlocked

Protect critical entry points with the Dortronics 43211-LU 4300 Series 2-door mantrap interlock, designed to keep one door secure while the other is accessed. This door interlock system enforces a strict one-door-unlocked policy in a 2-door / 1-room configuration, reducing tailgating and insider threat risks while simplifying visitor control. Built for easy integration, the 43211-LU works with any access control system and ties into surveillance and monitoring platforms for centralized event logging and live verification. The unit includes a heavy-duty power supply that is ready for fire alarm hookup, helping facilities meet safety requirements without sacrificing security. With one normally locked and one normally unlocked door configuration, the controller offers flexible deployment across vestibules, air locks, server rooms, laboratories, and cash handling areas. Backed by Dortronics engineering and US manufacturing, the 4300 Series delivers rugged reliability and consistent performance. For turnkey access control and enhanced security workflows, specify the 43211-LU mantrap interlock—contact us to discuss installations or request a quote.

• Enforces one-door-at-a-time control to prevent tailgating and unauthorized entry, improving perimeter security and access monitoring
• Integrates with existing access control systems and surveillance for centralized monitoring and audit trails
• Fire-alarm ready heavy-duty power supply ensures safety compliance and reliable operation during alarms
• Configured as a 2-door / 1-room mantrap with one normally locked and one normally unlocked door for flexible installations
• US-made 4300 Series unit (Model 43211-LU) delivers durable performance for data centers, labs, cash handling, and other high-security sites