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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
Function: Primary-to-secondary wiring harness with junction box
this operator is future-proof and environmentally friendly
Genuine DoorKing OEM replacement keypad
perfect for public and private traffic management
LiftMaster LM21XP Fire Door Release with Alarm Delay vehicle-detection-systems Function: Primary-to-secondary wiring harness withProgrammable Fire Door Release for Rolling and Sliding Systems The LiftMaster LM21XP is a UL listed fire rated door release device designed for use with rolling steel, sliding, and center parting doors. Engineered to respond to fire alarms or fusible link activation, it enables controlled release of fire doors in emergencies while supporting compliance with NFPA 72 and 80. The unit features a normally energized fail safe design, programmable delay on
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