Interlock airlock access control relay module for two doors designed for security environments such as banks and prisons Product overview This twodoor interlock relay module enforces an airlock arrangement so only one door can be open at a time. It integrates with existing access control systems to manage electric locks, door sensors, and requesttoexit inputs, helping secure controlled entry points and reduce unauthorized passage. Key benefits Prevents simultaneous openings: Ensures one door remains closed before the other can be released, reducing the risk of unauthorized entry or accidental breaches. Simple integration: Works with common access control panels and standard electric locks, allowing use with existing infrastructure without major redesign. Reliable operation: Relaybased control provides consistent switching performance for continuous daily use in demanding environments. Improves operational safety: Supports orderly movement through sally ports and airlocks, reducing tailgating and helping staff maintain controlled access flows. Compact and serviceable: Designed for straightforward installation and maintenance in security cabinets or control panels. Main functions and attributes Interlock control for two doors: Manages door states so only one door may be unlocked or held open at any time. Relay outputs: Provides independent relay contacts for door locking devices and alarm or auxiliary systems. Inputs for door sensors and requesttoexit: Monitors door position and exit requests to coordinate interlock behavior and restore secure state. Status indicators: Visual indicators for relay and input states simplify troubleshooting and commissioning. Compatibility: Compatible with standard electric locks, maglocks, access control panels and alarm systems used in commercial and institutional security installations. Durable enclosure and connectors: Built for reliable use in security equipment racks and control cabinets. Performance and installation notes Optimized for continuous, duty operation in secure facilities. Wiring terminals are grouped for clear connections to locks, sensors, and access controllers. Intended for professional installation by qualified security technicians or electricians to ensure correct configuration and compliance with site requirements. Use scenarios Bank vault or teller vestibule: Create a secure airlock between public banking areas and cash handling zones to control access during transactions. Correctional facility sally port: Manage entry and exit through controlled zones to prevent simultaneous door openings and maintain inmate and staff safety. Secure data center or laboratory entry: Coordinate server room or laboratory access where restricted passage and strict sequencing are required. This twodoor interlock relay module provides a practical, reliable solution for enforcing airlock behavior at secure entry points, integrating with standard access control equipment to strengthen perimeter and internal security without extensive system changes.