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LiftMaster LM21XPBB
Commercial Garage Door Opener
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Extended Performance Release Device
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Internal Battery Backup system.
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Trouble and alarm relays for communication with the fire alarm control panel.
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UL 864 Revision 9 compliant.
FEATURES
Commercial Fire Door Release Devices
Extended Performance Release
Provides the functionality of a standalone fire alarm system.
Includes battery backup for installations prone to power outages.
Allows you to connect a manually operated Fire Door to a buildng alarm system.
UL864 Revision 9 compliant.
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