The Rixson Firemark FM Series electromagnetic door releases hold fire and smoke barrier doors open until released by a remote smoke detector switch, fire alarm control or sprinkler system. In the event of power failure, doors are released to close automatically, but may be opened or closed manually at any time.
The door holders have a sprayed aluminum finish. All models feature a “multi-voltage” design, allowing them to operate on 12 VDC, 24 VAC/DC, or 120 VAC, thus simplifying both installation and inventory.
• Fail-Safe Operation
• Approx. 35 lbs. (15.9 kg) Holding Power
• Positive Release Button to Initiate Closing Motion when the Electromagnet is De-Energized