LiftMaster LM21XPBB Fire Door Release with Battery aom-sl-100fp-dc-pro and the integrated surge protection

and the integrated surge protection extends the lifespan of your gate operator

Durable Powder-Coated Finish: Provides corrosion resistance and ensures longevity in outdoor environments

it ensures correct function

Clutch assembly

ensuring consistent

LiftMaster LM21XPBB Fire Door Release with Battery aom-sl-100fp-dc-pro and the integrated surge protectionBattery Backup Fire Release Device for Rolling and Sliding Doors The LiftMaster LM21XPBB is a UL listed fire door release device with integrated battery backup, designed to safely release fire rated rolling and sliding doors in the event of an alarm or power loss. Compatible with fusible link systems, this fail safe unit supports up to four smoke detectors and two horn strobes while providing up to 72 hours of standby power. The LM21XPBB includes