LiftMaster LM21AFCB Advanced Fire Control Release Device liftmaster k20-1100 3Ah backup battery

3Ah backup battery

UL 325 Recognized Component

including the two and four-channel transmitters

If your gate requires higher capacity (up to 18 ft

myQ app required)

LiftMaster LM21AFCB Advanced Fire Control Release Device liftmaster k20-1100 3Ah backup batteryLiftMaster LM21AFCB Advanced Fire Control Release Device The LiftMaster Fire Control LM21AFCB Release Device is a UL ULC listed normally energized, fail safe device incorporating state of the art electronic control circuitry. This release device is designed for manual doors or motorized doors incorporating a reversing electric safety edge to create an automated door closing system, and in conjunction with a temperature fuse link system. The high