Three Door Interlock – VCRX3

  • Model: VCRX3
  • Lock – Door: 3
  • LED indicators: 3
  • Cables: 4 meters
  • Material: Plastic, Inox

Interlock locks are auxiliary devices designed to ensure that the doors of a room cannot be opened simultaneously, thus ensuring isolation between clean and non-clean areas.


  • Installed in the control rooms of clean rooms, buffer rooms, airlocks, intermediate rooms, changing rooms, using indicator light systems in the fields of healthcare, laboratories, pharmaceutical manufacturing facilities, electronics, semiconductors, and office spaces.
  • Used for entrance doors, emergency doors, and safety doors.

Reasons for choosing our product:

Our product has a wide range of applications in the pharmaceutical industry and factories with clean rooms.

  • Triple-door interlock: The system automatically checks whether all three doors are closed; if one door is not closed, it will trigger a continuous warning signal (the warning system will keep alerting) to remind users to close the two remaining doors.
  • Product structure: It consists of three parts: control equipment, electronic control lock, and electronic touch sensor switch.
  • LED display: The outer casing is made of plastic, combined with LED display lights, making it more visually clear and easier to operate.
  • High isolation capability: This interlock lock is specially designed for air isolation in clean rooms, often used in shock reduction rooms or pneumatic valve rooms within clean rooms.
  • Quality materials: Exquisite materials with high stability and low power consumption are chosen. This system uses computer chips for door entry, ensuring high stability, high precision, compact size, and full functionality. The power consumption of this system is less than 12W, with minimal heat generation, resulting in a longer lock lifespan. It is an ideal product for the clean industry.


  • Triple-door electronic interlock
  • Control lock voltage: 12V
  • Power supply: 220V; 50Hz
  • Lock cable: 3 meters, extendable up to 4 meters
  • LED voltage: 5V
  • Imported lock


  • Control equipment

  • Mechanical or electronic lock


  • When one door opens, the other two doors will automatically close, ensuring that all three doors cannot be opened simultaneously.
  • If a door remains open for an extended period, a warning bell will sound to remind staff to close the door.
  • In case of a power outage and for electronic interlock locks, all three doors can be opened, ensuring user safety.
  • In emergencies, an emergency button can be pressed to force the doors open.


  • The interlock control unit will be installed on the ceiling panel and connected to a pre-existing socket (the shorter the distance between the control unit and the socket, the better, to match the power cable of the lock and save wiring costs).
  • Indicator lights will be mounted on the wall panel, in easily observable areas for entering and exiting, usually located next to the panel door.
  • The lock latch will be installed underground inside the door panel (requires drilling and concealed wiring) and can be installed on the side or above the door frame.

Triple-door electronic interlock VCR X2, X3 has gained the trust of companies such as Dược Hà Hưng Pharmaceutical Factory, Medical Supplies Hai Phong, Davina Factory, Amepro Pharmaceuticals, Đại Bắc Pharmaceuticals, Hoa Linh Pharmaceuticals, and the Military Central Hospital 108 Accelerator Center.

Additionally, there are some important points to consider during interlock lock installation:

  1. Securely connect the signal cables to the lock latch and indicator light. Error Alert: The alarm will sound loudly and continuously.
  2. Align the lock latch and latch locator in the same direction (Wi-Fi symbol) on both accessories. Error Alert: The latch will not operate.
  3. Do not reverse the signal cables between the indicator light and the lock latch. Error Alert: Unable to install. Note that the signal cable of the lock latch is slightly larger than the cable of the indicator light; please be mindful during installation.
  4. Use cable boxes and wire conduits to protect signal cables on the ceiling, preventing damage from insects. Signal cables are different from power cables, and if they are damaged or cut, they can be challenging to reconnect.

Actual images and videos:

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For more information, please visit the VCR interlock product list.

Learn more about interlock.

View the VCR Interlock Lock Catalog here.


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