2-Door Interlocking Units for Access Control - In Stock at Communica

2-Door Interlocking Units - The Professional Choice

2-door interlocking units are an essential component in physical access security, ensuring that only one door in a sequence can be open at any time. This safety mechanism is vital for environments like banks, high-security lobbies, laboratories, clean rooms, or secure storerooms, where you need controlled separation between zones.

Communica stocks robust 2-door interlocking units for both retrofits and new builds. Our range offers reliable interface modules, relay logic control, and compatibility with electromagnetic locks, pushbuttons, and request-to-exit devices-as typically required in South African security, pharmaceutical, and industrial environments.

How 2-Door Interlocking Works

• Monitors status of both doors-if one is open, the other remains locked.
• Prevents tailgating and "airlock" both doors for sensitive areas.
• Can be used to activate alarms or signal control systems on forced entry.

Where Are Interlock Units Used?

• Banking and security entrances
• Clean room and pharmaceutical labs
• Industrial zones with hazardous separation
• Server and network rooms

Specification Highlights

• 2-door logic relay, DIN-rail or panel mount
• LED status indicators for easy troubleshooting
• Normally open/closed contacts for integration
• Designed for use with access controllers, maglocks, and door contacts

Choose the Right 2-Door Interlocking Unit with Communica

Selecting the right unit depends on your doors' actuation hardware, power supply (12V or 24V), and control logic requirements. Our range includes field-proven brands and models compatible with the most common electric maglocks, strikes, push-to-exit buttons, and fire alarm integration in South Africa.

Integration & Wiring Example

  +12V/24V DC Supply
      |
     [Interlock Unit]
      |        |
  [Door 1]  [Door 2]
   (Maglock) (Maglock)
      |        |
 [Push to Exit] (each)

For a typical access control installation, connect your power supply, maglock circuits, and door contact sensors directly into the interlock unit's terminals. Most units include wiring diagrams for hassle-free setup-see datasheets or request sample wiring from our technical team if needed.

Order, Collect, or Request a Quote

• Buy online or in-branch, with VAT invoices for business and procurement teams.
• Check live stock at our Samrand, Pretoria CBD, or Cape Town branches.
• Need a custom solution or larger order? Request a quote or speak to our industrial sales team.

Popular Brands & Categories

• Access Control & Security - including interlocking units and power supplies
• Shop by Brand - source reliable local and international manufacturers
• Branches & Trading Hours - find your nearest pickup point

Sources

• Communica Access Control Category
• IFSEC Global - Guide to Door Interlocking Systems
• Wikipedia - Door Interlock System Overview
• Communica Branches & Collection