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LiftMaster LM21XPBB Extended Performance Release Device
- Manufacturer: LiftMaster (Chamberlain Group)
- Model: LM21XPBB
- Category: Access Control
Learn more about the LM21XPBB, a fire door release operator from LiftMaster. The XPBB provides the functionality of a standalone fire alarm system.
- 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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