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LiftMaster LM21XP High Performance Release Device, Red

SKU: LM21XP LiftMaster

Special Order Item

This item is available by special order. Lead times may vary. Please contact us for availability and estimated delivery.

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Key Features

  • Provides a fail-safe release that protects people and property by reliably disengaging manual fire doors and shutters during alarms
  • Preserves door tension by detecting closed position, preventing accidental or uncontrolled releases
  • UL 864 Revision 9 compliant for code-conscious installations and easier AHJ acceptance
  • Integrates directly with fire alarm panels for centralized monitoring and security system coordination
  • Red, high-visibility housing for quick identification and streamlined maintenance

Quick Specifications

Product Model
LM21XP
Brand Name
Liftmaster
Product Name
High Performance Release Device
Product Type
Fire Door Release Device
View Full Technical Specifications

Product Information Tabs

Overview

Enhance your facility's fire safety and security with the LiftMaster LM21XP High Performance Release Device. Designed for manually operated fire doors and shutters, this fail-safe release device ensures doors disengage only when required—protecting occupants while preventing accidental releases. The LM21XP detects when a door is closed so tension is maintained during alarm activation, reducing mechanical stress and false trips.

Built to meet UL 864 Revision 9 standards, the LM21XP integrates seamlessly with existing fire alarm panels and building monitoring systems to provide centralized alarm notification and improved security coordination. Note that it requires use with an alarm system containing battery backup to maintain fail-safe operation during power loss. The bright red housing makes inspection and maintenance straightforward for facility managers and service technicians.

Ideal for commercial, industrial, and institutional sites that require code-compliant fire door control, the LiftMaster LM21XP supports your surveillance and monitoring strategy while simplifying installation and compliance. Add this reliable release device to your fire safety and security plan—order now or contact our team for integration guidance.

Features

  • Provides a fail-safe release that protects people and property by reliably disengaging manual fire doors and shutters during alarms
  • Preserves door tension by detecting closed position, preventing accidental or uncontrolled releases
  • UL 864 Revision 9 compliant for code-conscious installations and easier AHJ acceptance
  • Integrates directly with fire alarm panels for centralized monitoring and security system coordination
  • Red, high-visibility housing for quick identification and streamlined maintenance
General Information
Brand Name Liftmaster
Manufacturer The Chamberlain Group, Inc
Product Name High Performance Release Device
Product Type Fire Door Release Device
Product Model LM21XP
Manufacturer Part Number LM21XP
Physical Characteristics
Color Red
Miscellaneous
Features Allows you to connect a manually operated Fire Door to a building alarm system, Detects when door is closed, so tension is not released from door during alarm activation, Must be used in conjunction with alarm system containing a battery backup, Provides a fail-safe release mechanism for the fire door or shutter, UL 864 Revision 9 compliant, Works with a fire alarm panel for as a fail-safe release mechanism
Country of Origin MX