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.

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. 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. Fire smoke barrier doors door releases when tripped by an alarm or smoke detector private offices door releases when triggered by a remote switch. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately.

The tri voltage design provides 35 pounds of holding force. When activated by a fire alarm the magnet shuts off and releases the 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. 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.

Door holders closers can play an important role in controlling smoke migration in a building. There are no codes nation or state wide that require doors to be held open. Electromagnetic door holder releases are designed for virtually any remote door release applications. We offer a variety of magnetic door holder and magnetic fire door holder finishes including us28 luma sheen duranodic and gold.

For use with doors that already have a closer these holders keep doors open with an electromagnet. The magnet is fail safe and will hold the door until the current is interrupted. All are reversible for right or left door swing directions. They provide a high holding force.

With that said magnetic door holders are used as a convenience to hold doors open during normal operation. Wire these holders directly into your fire alarm system. 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. They must be used in conjunction with closing devices.

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.