LiftMaster LM21XPBB Extended Performance Release Device with Battery Backup 41ASWG-438SA LiftMaster Hall Effect Sensor Kit

LiftMaster Hall Effect Sensor Kit | LIF-K74-18381

Integrated maximum run and auto close timer (0-9 minutes)

Read Range: RKCM-02 Molded Card up to 4

and entry points

Housed in a locked

LiftMaster LM21XPBB Extended Performance Release Device with Battery Backup 41ASWG-438SA LiftMaster Hall Effect Sensor KitLiftMaster 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