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LM21XP Manual

Page 1
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com OWNER'S MANUAL MODEL LM21XP EXTENDED PERFORMANCE RELEASE DEVICE

LM21XP Manual

Page 2
... activated via a smoke detector or an alarm relay from an automatic initiating device and are used in conjunction with battery backup. INTRODUCTION GENERAL DESCRIPTION The LiftMaster® LM21XP Release Device is designated to be used on alarm, closed door detection capabilities, Form C relay outputs for use on the following pages, they will...

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LM21XP Manual

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