STJH relay two-door interlock kit with control enclosure and paired status stations on white.

STJH-TWO-DOOR-CLEANROOM-INTERLOCK-SYSTEM-RELAY

Two-Door Cleanroom Interlock System Relay-Logic

Interlock a two-door airlock with straightforward hardwired relay logic and visible door-state feedback.

Dry-contact requests accept a push button or access-control output.
Two-door exclusion avoids overlapping release commands.
Local relay switching requires no network connection.

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Product Introduction

The relay-based system connects two door-position contacts to a local control assembly and coordinates the corresponding locks. Request contacts initiate access, while relay changeover contacts provide the switching paths for locking and indication. The package is intended for a simple vestibule with two entrances. Its hardwired arrangement keeps the operating sequence local and allows the control enclosure and peripheral devices to be positioned around the actual door layout.

Key Features

Dry-contact requests accept a push button or access-control output.
Two-door exclusion avoids overlapping release commands.
Local relay switching requires no network connection.

Technical Parameters

Door Count	2
Logic Type	Hardwired relay
Door Sensing	Magnetic position contacts
Request Input	Normally open dry contact
Lock Switching	Relay contacts
Indication	Local door-status lights
Network Connection	None
Emergency Function	Override release input
System Components	Controller, locking interfaces and door-status devices
Customization	Locking hardware and station placement can suit the intended vestibule.

Applications

Small personnel gowning airlocks.
Simple two-door material vestibules.

Solutions for Your Application

The operator cannot see the opposite door.

Position status indicators at both approaches to show when access is available.

An existing access reader must request entry.

A dry-contact request links its release output to the local interlock.

Available Options

Compatible magnetic locks or strikes.
Request push buttons.
Delayed relocking accessory.

Planning a Two-Door Cleanroom Interlock System Relay-Logic specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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