Liftmaster LM21AFCB Advance Fire Control Release Device lm-bmt Anti-Tailgating Feature: Prevents unauthorized entry

Anti-Tailgating Feature: Prevents unauthorized entry by closing the gate immediately after vehicle passage

The LiftMaster K-001A5872 Control Board (Q401) is an OEM replacement designed to maintain optimal functionality in 1HP LiftMaster Elite gate operators

the MA036 (also known as MA-036) delivers durability

these hinges offer smooth

Compatible Operator: All-O-Matic SL-150AC (1/2 HP only)

Liftmaster LM21AFCB Advance Fire Control Release Device lm-bmt Anti-Tailgating Feature: Prevents unauthorized entryAdvanced Fire Release Control for Motorized and Manual Door Systems The LiftMaster LM21AFCB is a UL listed fire control release device engineered to automatically close motorized or manual fire rated doors in the event of an alarm or power loss. Designed for dry indoor installations, the LM21AFCB offers programmable delay settings, auxiliary limit switch support, 3 cycle obstruction logic, and an integrated annunciator connection. It supports up to