LiftMaster LM21XPBB Extended Performance Release Device with Battery Backup bg770 barrier gate enclosure and Mega Slide-X

and Mega Slide-X

edge sensors

Monitored Safety Inputs: 3 mainboards

The heavy-duty LiftMaster gate opener supports 6

LiftMaster LM21XPBB Extended Performance Release Device with Battery Backup bg770 barrier gate enclosure and Mega Slide-XLiftMaster LM21XPBB Extended Performance Release Device with Battery Backup The LiftMaster LM21XPBB Release Device is a UL ULC listed normally energized fail safe device designed for use on rolling doors, single slide, center parting level, and inclined track doors. This device is a normally energized fail safe releasing device incorporating state of the art electronic control circuitry. The release device responds to emergency conditions generated