Gerda® ACB
The Gerda® Access Control Box (ACB) is a secure enclosure commonly integrated into new-build developments to protect access control switches on buildings with electronic door systems, preventing tampering and unauthorised use. In the event of an emergency, the Fire and Rescue Service can use the Gerda One Key® System to override the access control, ensuring immediate and secure access to the building.
Designed for reliability and compliance, the ACB supports emergency building access, facilitates safe and efficient firefighter entry, and maintains building security without compromising operational efficiency.
Designed with Firefighters for Firefighters
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Designed with Firefighters for Firefighters
Find out more >
Gerda® ACB
- Operated through the GSP One Key® System for the FRS
- Secured by Design
- Patented integral cylinder with 4 billion key combinations.
- Part of a British Standards Kitemarked system to BS3621
- The door handle is attached to the right side of the door.
- The ACB is designed to counter condensation build up.
- Designed to be positioned externally to a building as well as internal siting.

Key Features
The ACB is designed to protect the access control switch in new building developments in line with Secured by Design guidance.
For Fire and Recure Service accessibility, preventing unauthorised use.
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Performance in Detail
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