Magnetic Door Holder Fire Alarm

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.

Magnetic door holder fire alarm.

When de energized by a relay controlled by the fire alarm system or other switch the door is released to a closed position checking the spread of smoke and flames. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately. They provide a high holding force. When activated by a fire alarm the magnet shuts off and releases the door.

Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. The device holds a door open while energized. A magnetic door holder is a relatively simple device that when powered typically by 24vdc or 120vac will create a magnetic pull. 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.

Wire these holders directly into your fire alarm system. Door holders closers can play an important role in controlling smoke migration in a building. Door holders are normally energized to magnetically hold doors open. The magnet is fail safe and will hold the door until the current is interrupted.

The sentronic 7800 series magnet releases when the fire alarm panel enters an alarm condition and the electrical current is interrupted allowing the door to perform manually until power returns. For use with doors that already have a closer these holders keep doors open with an electromagnet. In the event of a power failure they release the door to a closed position to keep the facility secure. All are reversible for right or left door swing directions.

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. 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. The magnetic portion of this device is installed on the wall that meets the open fire door now to tie this whole concept together you will.

Depending on your fire alarm installation you may need to install a magnetic door holder at the location of each fire door. The dorgards are great by the way but if the spec is magnetic door retainers they may want them as opposed to dorgards but if its high end property which a flat worth 3 5 mill is id expect a proper fire alarm in tbh a 2 zone panel is cheap enough and will give you the felxibility you need and give you extra income on repairs and servicing.