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Liftmaster MEGA ARM TOWER DC Barrier Gate Operator (MAT)

Liftmaster MEGA ARM TOWER DC Barrier Gate Operator

LiftMaster® high-traffic DC powered barrier gate operators with Battery Backup keep traffic flowing and provide easy in and out access 24 hours a day. Rated for 6,000 cycles per day with an opening time of 2.5 seconds and constructed of corrosion resistant aluminum alloy, the Mega Arm/Mega Arm Tower are the ideal choice for high-traffic applications. The product’s Security+ 2.0® radio technology provides unparalleled reliability and quick, secure access. Optional LED Barrier Arm provides exceptional visibility 24 hours a day.

  • Battery Backup safeguards your property by providing up to up to 900 cycles* when the power is down.
  • Breakaway Arm can be easily reinstalled if arm is hit, quickly restoring traffic control.
  • Continuous Duty DC Motor is powerful and features soft starting and stopping for quiet, efficient operation.
  • Heavy-Duty Drive System with Commercial Gearbox provides reliable, continuous operation.
  • Magnetic Limit Sensors have no moving parts and are designed for high-cycle applications, so there’s less wear and tear and you’re assured dependable operation day-in and day-out.
  • Sequenced Access Management provides control between barrier and slide/swing gate operators to maximize traffic flow.
  • K1 Relay provides output signals to activate other accessories or operators during open/close cycles.
Safety and Security
  • Security+ 2.0 Patented Multi-Frequency Secure Radio Technology virtually eliminates interference and gives you quick and secure access with enhanced range and performance.
  • Fire Department Compliant selectable settings allow gate to auto open upon loss of AC power or battery depletion.
  • Anti-Tailgate Feature prevents unauthorized access to your property.
  • Built-in Surge Suppression protects against high-voltage spikes and surges.
  • Dual-Gate Operation Works in conjunction with another barrier gate operator.
  • Built-In 110V Convenience Outlet Simplifies adding/powering up accessory devices. Save the expense of having to add an extra outlet.
  • Universal Controller With 8 Inputs Allows for the connection of a full range of optional external devices.
  • Right or Left Handed Operation Provides flexibility to fit your application and ease of installation.
  • Slip Clutch Option Allows arm to be manually pushed open without damaging the shear pin. Arm automatically resets to normal closed position upon receiving activation.
  • 850LM Radio Receiver Included Stores up to 90 remote controls.
  • Warranty Two years parts. Ten years frame.
  • Operator Speed 2.5 seconds to open or close
  • Power 120V / 220V applications
  • Accessory Power 24VDC 500 mA
  • Operator Weight (without arm)
    • MADCBB3 – 89 lbs.
    • MATDCBB3 – 113 lbs.
  • UL Listed UL 325 & UL 991 – Class I, II, III, IV
  • Gear Reduction 60:1 reducer in synthetic oil bath
  • Motor 1/2 HP equivalent Continuous-duty 24VDC / 800 RPM
  • Chassis Powder coated 1/4 in. aluminum alloy
  • Cover MA – UV-resistant polyethylene MAT – Full aluminum cabinet
Recommended Capacities

1/2 12ft. & 17ft. Aluminum Arm
14ft. Soft-Padded arm.

LiftMaster® gate operators comply with UL 325 standards. External entrapment devices must be added to meet UL 325 standards. Your installer will recommend suitable entrapment devices such as photoelectric sensors or edge sensors.

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LED Barrier Arm Specifications 
  • Arm Material Aluminum
  • Operating Voltage 12VDC
  • Lamp Type LED 3528 IP68 Silica gel filled
  • Color Red/White
  • Power 14.4 W/m
  • Operating Temperature -13°F (-25°C) to 140°F (60°C)
  • UL Listed UL 325 & UL 991 – Class I, II, III, IV
  • Warranty Six month limited.


  • 12 ft. x 3 in. x 2 1/4 in., 17 lbs.
  • (10 ft. 9-3/4 in. installed)

  (1) 12 ft. Arm with LED
  (1) Installation Kit


  • 17 ft. x 3 in. x 2 1/4 in., 25 lbs.
  • (14 ft. installed)
Requires Counterweight (MALEDCW)


  (1) 17 ft. Arm with LED
  (1) Installation Kit


  • 14 in. x 2 3/4 in. x 2 1/8 in., 11 lbs.

Additional Arm Accessories***

White Arm with: Yellow and Black Stripes Red and White Retro-Reflectorized DOT Tape Yellow Padding Articulating with Yellow and Black Stripes 
Arm Length Aluminum Arm Aluminum Arm Aluminum Arm PVC Arm
9 ft. - - - MA034‡ (cut to length)
10 ft. - - - MA024-10 (cut to length)
12 ft. MA024 (10 ft. 9-3/4 in. installed) MA024RDOT (10 ft. 9-3/4 in. installed) MA025 (N/A) -
14 ft. - - MA028† (N/A) -
17 ft. MA116*** (14 ft. installed) MA116RDOT*** (14 ft. installed) - -

*Basic set up with remote controls programmed with a 12 ft. Barrier Arm. Does not include power draw from added accessories. LiftMaster® low power draw accessories recommended to extend cycles on Battery Backup
**All Arms shipped as single piece. Installer cuts down to meet site requirements.
***Arm requires counterweight (MA117)
†Requires collar adaptor (MA031)
‡Requires Hardware kit

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