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LiftMaster Ext. Relay Device w/BBU - LM21XPBB

LiftMaster Ext. Relay Device w/BBU - LM21XPBB

This external relay device provides fire door control with integrated battery backup. Keeps emergency operations active even during power failure. Compatible with LiftMaster commercial operators. Essential for safety-critical access systems.

Part Number: LM21XPBB
$854.43 each
$854.43 each
OR
 

Details

LiftMaster Ext. Relay Device w/BBU - LM21XPBB

This external relay device provides fire door control with integrated battery backup. Keeps emergency operations active even during power failure. Compatible with LiftMaster commercial operators. Essential for safety-critical access systems.

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