50kg 110lbs Force Wall Mount Smokeproof Emergency Door Holder

Model No.: S4A-31

What is electromagnetic door stopper？

Electromagnetic door holders and releasers keep doors open until they are released by fire-alarm systems, 

remote smoke detectors, or other switching devices. They provide a high holding force. In the event of a power 

failure, they release the door to a closed position to keep the facility secure.

How do you remove a magnetic door stopper?

Removing the Old Magnetic Door Stop

Use a screwdriver to loosen the screws until they come off. Remove the entire catch assembly and put them aside. 

Next, work on the magnetic door stop installed on the wall trim. Remove the screws, pull off the device, and set it aside.

Schematic diagram of fire electromagnetic door escape!

1.Because people come and go,they must be kept open

2. when a fire occurs, the smoke dotector detocts a fire signal,themonitoring center immediately energizes the door suction, and thepersonnel immediately escape ond rush to the fire channel.

Afterthe personnel are safe,press the power-off button to powor off,automatically bounce and close the door The device clasosthedoor, and the smoke or fire is now isolated in this area!

3.The fire door is closed andpersonnel are safe

4.People can escape safely.

The smoke is only in this area and willnot spread to other floors or areas.

At the same time, the safety of personnelon other floors or areas is guaranteed.