Two Door Interlock Controller (airlock) | Dlim

The DLIM Door Lock Interface Module is a dedicated control PCB designed to manage and monitor two access-controlled doors. It is commonly used in interlock applications where only one door can be opened at a time, helping maintain security, environmental control, or restricted access between secure areas.

The module features separate inputs and outputs for each door, along with dual door monitoring inputs and lock release controls. It is ideal for applications such as clean rooms, data centres, laboratories, cash handling facilities, and other environments where preventing simultaneous door opening is critical.

Key Features

• Door lock interface module
• Controls two doors from a single PCB
• Interlock functionality prevents both doors opening simultaneously
• Two independent door monitoring inputs
• Dual door release inputs
• Separate inputs and outputs for each door
• Voltage-free lock outputs
• Suitable for access control systems
• Compact PCB design
• Easy integration into new or existing installations
• Designed for high-security door control applications

Technical Specifications

• Product Type: Door Lock Interface Module
• Number of Doors:
  • 2
• Interlock Function:
  • Yes
• Door Monitoring Inputs:
  • 2
• Door Release Inputs:
  • 2
• Lock Outputs:
  • Voltage-Free Contacts
• Output Rating:
  • 5A @ 24V
• Supply Voltage:
  • 12VDC

Typical Applications

• Airlock door systems
• Clean rooms
• Data centres
• Laboratories
• Pharmaceutical facilities
• Secure offices
• Cash handling areas
• Controlled access environments

How Interlocking Works

The DLIM continuously monitors both door circuits and prevents the second door from being released while the first door remains open. This ensures that only one door can be opened at any given time, helping maintain security and environmental separation between controlled areas.

Benefits

• Prevents simultaneous opening of two doors
• Improves site security
• Reduces risk of unauthorised access
• Ideal for airlock-style door systems
• Simple integration with existing access control equipment
• Supports monitored door operation