LiftMaster LM21XP Extended Performance Release Device HySecurity The release device responds to

The release device responds to emergency conditions generated from an automatic initiating device and is used in conjunction with a fusible link system

LiftMaster G193025

a user simply enters a PIN followed by the # key

The Viking E-4K / E4S Dual Residential Swing Gate Opener is known in the industry for being the best

LiftMaster LM21XP Extended Performance Release Device HySecurity The release device responds toLiftMaster 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