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Last edited 05 Sep 2017
Automatic release mechanism
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A device which will allow a door held open by it to close automatically in the event of each or any one of the following:
- detection of smoke by automatic apparatus suitable in nature, quality and location;
- operation of a hand-operated switch fitted in a suitable position;
- failure of electricity supply to the device, apparatus or switch;
- operation of the fire alarm system if any.
 Find out more
 Related articles on Designing Buildings Wiki
- Approved documents.
- Door closer.
- Door energy rating.
- Fire detection and alarm systems.
- Fire door.
- Fire Door Inspection Scheme.
- Fire Prevention on Construction Sites.
- Fire protection engineering.
- Hold-open device.
- Inner room.
- Joint fire code.
- Separating floor.
- The Regulatory Reform (Fire Safety) Order 2005.
- Visual alarm devices - their effectiveness in warning of fire.
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