Doors are automatic and self closing through an isolating governing release system rated 4 3 1 1 2 3 4 or oversized certificate.
Automatic fire door release.
The detection of smoke by an automatic detection.
The release device is designed so that the leaf instantly releases manually and upon release becomes self closing or.
When detection occurs the result is the mechanical or electromagnetic release of the door s.
Liftmaster s fire door release devices provide the ultimate reliability exactly when it s needed.
The afcb fire door release device is designed to be used in conjunction with a standard commercial door operator to provide a fully automated door closing system.
Fire door release devices in case of an emergency it s critical to have equipment you can count on.
All automatic door releases should be triggered by each or any of the following.
Upon release of the hold open mechanism the leaf becomes self closing.
No matter what the automatic means of smoke fire detection you use the release of one or more smoke doors is usually accomplished through an electromechanical device that holds the doors open until smoke is detected.
This 120vac device can power up to four smoke detectors and two horn strobes or speaker strobes.
The automatic releasing mechanism or medium is activated by the operation of approved smoke detectors.