LiftMaster LM21XP Extended Performance Release Device SEA solar kit Normally open contact activates for

Normally open contact activates for 0

Usage Classification: Class I

Compatible with all USAutomatic receivers

full-duplex telephone communications between visitors and residents for granting access

LiftMaster LM21XP Extended Performance Release Device SEA solar kit Normally open contact activates forLiftMaster LM21XP Extended Performance Release Device The LiftMaster LM21XP 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 from an automatic