Magnetic Door Hold Open Fire Alarm

In the event of a fire emergency the fire alarm control panel or other compatible control means will release the magnet allowing the door to close to prevent the spread of smoke.

Magnetic door hold open fire alarm.

The magnet is fail safe and will hold the door until the current is interrupted. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately. 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.

Our cal royal magnetic door holders and magnetic fire door holders are ul listed for both the us and canadian market as well as approval from the california department of forestry and fire for the state of california. Owners and managers of buildings with fusible link hold open devices on fire. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. There are no codes nation or state wide that require doors to be held open.

Dropping door holder power with loss of ac voltage when designing a fire alarm system you may come across the need for magnetic door holders. Door holders closers can play an important role in controlling smoke migration in a building. On the fire alarm side you would need a control relay to intercept a switch leg of power to the door holder circuit as well as an initiating device such as a smoke detector to activate the relay. For use with doors that already have a closer these holders keep doors open with an electromagnet.

The tri voltage design provides 35 pounds of holding force. We offer a variety of magnetic door holder and magnetic fire door holder finishes including us28 luma sheen duranodic and gold. These fire rated door holders have an energized coil which creates a magnet strong enough to hold the self closing fire rated doors in the open position. Wire these holders directly into your fire alarm system.

Door holders are normally energized to magnetically hold doors open. When activated by a fire alarm the magnet shuts off and releases the door. With that said magnetic door holders are used as a convenience to hold doors open during normal operation. An ordinary door closer and an electromagnet powered by the building s fire alarm and smoke detector system.