General Information
Brand NameLiftMaster
ManufacturerThe Chamberlain Group, Inc
Manufacturer Part NumberLM21XP
Product ModelLM21XP
Product NameHigh Performance Release Device
Product TypeFire Door Release Device
 
Miscellaneous
FeaturesAllows 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
 
Physical Characteristics
ColorRed

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