Pass Box – Prevent Cross-Contamination with Every Pass

Mechanical interlock uses physical linkage devices (such as springs, hooks, and levers) to achieve physical locking. When one door is open, the other door remains locked, preventing simultaneous opening.

It is widely used in standard-grade cleanrooms, laboratories, and other environments with low requirements for intelligent control.

• Simple structure, stable and reliable
• No power supply required, easy maintenance
• Lower cost
• Slightly slower response time, somewhat heavier operation feel
• Suitable for applications with basic functional requirements where interlocking must be maintained during power outages

Electronic interlock achieves interlocking logic via an electronic control system. It employs sensors (such as magnetic door sensors or infrared sensors) and control circuits to monitor the opening status of both doors, automatically performing locking and unlocking operations.

It is commonly used in pharmaceuticals, biotechnology, electronics, and other settings with high cleanliness and management requirements.

• Intelligent control, can be integrated with access control and air shower systems
• Easy operation and rapid response
• Supports functions such as alarm notifications and delayed locking
• Higher cost, heavily dependence on power supply
• Emergency procedures are required in the event of circuit failure or power outages