This type of system has a wall or floor mounted electro magnet that can hold a metal disc fitted to the back of the fire door to hold it open.
Magnetic fire door retainers.
However installation costs are high.
Once an alarm activates the fire doors are automatically released.
The unit is surface mounted and is contained in a white fire resistant abs casing.
There is a manual release button to override the system to release the door.
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The magnetic fire door retainers can also be manually released via a push button.
Holding your fire door open and releasing it in case of fire allowing it to close.
They enable doors to be held open under normal conditions but automatically released in the event of fire alarm activation to stop the spread of fire.
The doormouse dr87 0351 230 230vac magnetic fire door retainer legally holds open internal fire doors as it is a hard wired device.
The main advantage of this type of system is the low purchase cost of the equipment and the fact that no batteries have to be replaced regularly.
The dorgard along with our other fire door retainers offers a safe and legal alternative.
Eaton s compact conventional magnetic door retainer are competitively priced simple to install and discreetly styled.
Please use our technical fire door retainer overview for more guidance.
An integral manual release button will close the door without operating the fire alarm.
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Dorgard and other fire door retainers.
An example of this type of door holder is the doormouse fire door holder.