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LiftMaster LM21AFCB Advance Fire Control Release Device

$1,119.99

***ON BACKORDER***

  • UL 864 Revision 9 compliant.
  • 3 count obstruction cycling.
  • Selectable 10, 20, 30, or 60-second time delay on alarm.
  • Test key switch – Floor level testing.
  • Motor voltage sensing.
  • Form C relay output.
  • Lower limit detection.
  • Safety timer.
  • Battery support for release device logic, smoke detectors, standard annunciators.
  • Trouble diagnostic capabilities (does not support operator).
  • 2 wire or 4 wire smoke detector wiring.
  • 120Vac operating voltage.
Availability: In stock

***ON BACKORDER***

The LiftMaster® Fire Control LM21AFCB Release Device is a UL/ULC listed normally energized fail-safe device incorporating state-of-the-art electronic control circuitry. This release device is designed to be used with manual doors or motorized doors incorporating a reversing electric safety edge to create an automated door closing system, and is also used in conjunction with a temperature fuse link system. The high performance control panel responds to emergency conditions generated from an automatic initiating device. Upon activation, the device will then automatically close a motorized door or mechanically release a door in the absence of motorized operation.

Features include:
  • UL 864 Revision 9 compliant.
  • 3 count obstruction cycling.
  • Selectable 10, 20, 30, or 60-second time delay on alarm.
  • Test key switch – Floor level testing.
  • Motor voltage sensing.
  • Form C relay output.
  • Lower limit detection.
  • Safety timer.
  • Battery support for release device logic, smoke detectors, standard annunciators.
  • Trouble diagnostic capabilities (does not support operator).
  • 2 wire or 4 wire smoke detector wiring.
  • 120Vac operating voltage.

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