For example the most common use is using the magnetic door holder as a hold open device.
Fire door magnetic lock.
In the event of a power failure they release the door to a closed position to keep the facility secure.
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This includes the access control lock or fire exit hardware power transfer door position switch or any other component mounted on the door or frame.
Key fobs and card reader units release switches digital keypads and emergency break glass units.
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The maglock devices are powered by a 12v power supply.
There is no prohibition on the use of mag locks on fire door assemblies as long as all of the egress requirements are met and the mag lock is labeled for use on a fire door assembly.
They provide a high holding force.
With no moving parts to bind or wear out the security door controls electromagnetic door lock provides positive instantaneous release whether caused by a signal from the fire command center remote control or access control.
These electromagnetic door holders will keep the door open.
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On commercial fire doors the magnetic fire door holders serves an array of purposes and safety functions.
One of the requirements for a fire door is that it must be self latching so removing a mechanical lockset and replacing it with an electromagnetic lock would not meet the latching requirement.
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Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices.
This is extremely useful in long hospital hallways and corridors.
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And of course the maglocks can be released automatically by a fire alarm system in case of fire.