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LM21XP

LiftMaster Extended Performance Fire Door Release Device

  • UL864 Revision 9 compliant
  • Programmable DIP switch delay setting - either 10 20 30 or 60 seconds delay of door release to permit passage clearance
  • Inputs for normally open 2- or 4-wire detectors and 4-wire normally closed detectors
  • Trouble and alarm relays for communication with the fire alarm control panel if required
  • Audible trouble sounder to indicate when the release device is not operational
  • On board diagnostic LEDs for easy troubleshooting
    • .......more details
Installation manual
16-4L290

LiftMaster Cogged Vbelt 4L 29"

K74-30754

LiftMaster Battery Harness 1 unit only

  • For LA400
  • 2 harnesses required per operator- 1 for each battery
2B747

LiftMaster Direct Connect Cable (41B0747)

  • EL25 conecting cable
2B735

LiftMaster Main Board EL25 (041B0735)

  • Same as 041B0735
374UT

LiftMaster Universal 2-btn Mini Transmitter

  • Dual frequency universal transmitter
  • Will activate 2 different types of openers (1 on each button)
  • Compatible with major brands except Marantec & Hormann
  • This mini remote is NOT compatible with DIP switch remotes or receivers
Programming instructionsSell sheet
19-5116

LiftMaster Trolley Roller Chain Pack #41 for 16ft Door

  • For 3/4 & 1 HP trolley operators
19-5118

LiftMaster Trolley Roller Chain Pack #41 for 18ft Door

  • For 3/4 & 1 HP trolley operators
Q400E-HCT

LiftMaster Control Board HCT

  • Replaced Q400D-HCT
Q248

LiftMaster Gear Reducer 40:1 HCT Post 2/99 (K32-50251)

  • Same as K32-50251