LiftMaster Gate Operators: Repair, Barriers & Intercoms

LiftMaster is the professional brand of The Chamberlain Group, and its gate line runs from residential actuators to industrial slide operators, barrier arms and smart video intercoms. Most of the line uses an LED diagnostic display and monitored safety inputs, so a LiftMaster that stops usually leaves a trail to follow.

We repair LiftMaster operators across residential, commercial and industrial sites, and service the barrier arms and CapX intercoms that work with them.

Gate Core Automation is an independent service company. We are not affiliated with, authorized by, or endorsed by LiftMaster or The Chamberlain Group.

Call Now: 954-310-6669

Slide Operators

RSL12UL

Capacity Up to 25 ft and 800 lb

Use Residential and light commercial

Motor 12 VDC

Speed Up to 12 in per second

Duty 120 cycles per day

Manufacturer warranty 3 years

Battery backup, solar ready, wireless dual-gate, myQ, PosiLock.

CSL24UL

Capacity Up to 50 ft and 1,500 lb

Use High-traffic commercial

Motor 24 VDC

Speed 12 in per second

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

PosiLock, fire department auto-open, 1/4 inch steel chassis, battery backup, myQ.

HDSL24UL

Capacity Up to 75 ft and 3,000 lb

Use Heavy-duty commercial

Motor 24 VDC brushless

Speed 6 to 12 in per second, variable

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

Direct drive, soft start and stop, PosiLock, 4 programmable relays.

SL3000UL

Capacity 1/2 HP model up to 50 ft and 1,000 lb, 1 HP model up to 50 ft and 2,000 lb

Use High-traffic commercial

Motor AC, 1/2 HP or 1 HP

Speed 12 in per second

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

High-temperature insulated motor, mechanical limits, heater option.

INSL24UL

Capacity Up to 70 ft and 2,200 lb

Use Industrial

Motor 24 VDC brushless

Speed 6 to 12 in per second, variable

Duty Continuous

Manufacturer warranty 5 years

Lockable weatherproof steel cabinet, industrial chain drive, myQ, retrofits in place of the SL585 and SL595.

IHSL24UL

Capacity Up to 90 ft and 5,500 lb

Use Heavy industrial

Speed 6 to 12 in per second, variable

Duty Continuous

Manufacturer warranty 5 years

We also service the SL585 and SL595 industrial operators still running in the field. LiftMaster has replaced both with the INSL24UL, which is built to drop in where they stood.

LiftMaster rates the surge protection on its operators, on both the high and low voltage sides, to guard against lightning strikes up to 50 feet away.

Swing Operators

LA400UL

Capacity 850 lb at 10 ft, down to 550 lb at 16 ft

Use Residential

Motor 24 VDC

Speed 15 to 18 seconds per 90 degrees

Duty 100 cycles per day

Manufacturer warranty 2 years

Linear actuator, all-metal gear drive, battery backup, solar ready.

LA500UL

Capacity 1,600 lb at 8 ft, down to 600 lb at 18 ft

Use Residential and light commercial

Motor 24 VDC

Speed 15 to 18 seconds per 90 degrees

Duty 300 cycles per day

Manufacturer warranty 2 years

Linear actuator, die-cast aluminum housing, battery backup, solar ready.

RSW12UL

Capacity 1,000 lb at 6 ft, down to 400 lb at 16 ft

Use Residential and light commercial

Motor 12 VDC

Speed About 15 seconds per 90 degrees

Duty 250 cycles per day

Manufacturer warranty 3 years

Steel chassis, wireless dual-gate, battery backup, solar ready.

CSW24UL

Capacity Up to 18 ft and 1,600 lb

Use High-traffic commercial

Motor 24 VDC

Speed About 15 seconds per 90 degrees

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

1/4 inch steel chassis, battery backup, solar ready, myQ.

HDSW24UL

Capacity 2,800 lb at 14 ft, down to 1,500 lb at 22 ft; up to 4,500 lb with the long arm

Use Heavy-duty commercial

Motor 24 VDC brushless, 1.5 HP peak

Speed Variable

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

Rated for up to 6 million cycles, direct drive, long-arm option.

CSW200UL

Capacity 1/2 HP model up to 18 ft and 1,600 lb, 1 HP model up to 22 ft and 2,000 lb

Use High-traffic commercial

Motor AC, 1/2 HP or 1 HP

Speed About 15 seconds per 90 degrees

Duty Continuous

Manufacturer warranty 5 years commercial, 7 years residential

High-temperature insulated motor, heater option.

Barrier Arms

MA / MAT Mega Arm

Arm 12 to 17 ft, LED, aluminum or padded

Use Commercial

Motor 24 VDC

Speed 2.5 seconds

Duty 6,000 cycles per day

Manufacturer warranty 2 years components, 10 years cabinet

Breakaway arm that can be re-mounted after a strike, battery backup, fail-open option. MAT is the tower cabinet version.

MAS / MAST Mega Arm High Speed

Arm 8 ft padded

Use High-traffic commercial

Motor 24 VDC

Speed 0.9 seconds

Duty 10,000 cycles per day

Manufacturer warranty 2 years components, 10 years cabinet

High speed, battery backup. MAST is the tower cabinet version.

TECHNA CBG24DC

Arm 10, 12 or 14 ft

Use Commercial and community

Motor 24 VDC brushless

Speed 2.5 seconds

Duty Continuous

Manufacturer warranty 2 years

Rated for wind up to 60 mph, breakaway bracket, arm-strike detection, Wi-Fi and Ethernet.

TECHNA IBG24DC

Use Industrial

Motor 24 VDC

Duty Continuous

Manufacturer warranty 2 years

5 programmable relays, local and remote diagnostics.

BG790

Arm 24 ft wishbone with counterweights

Use Industrial

Motor AC 1/2 HP, single or three phase

Speed 11 seconds

Duty 25 cycles per hour

Manufacturer warranty 2 years

Fail-open option.

Smart Video Intercoms

CapXS

Capacity 1 door or gate, up to 500 users

Use Gated homes and small multi-tenant

Manufacturer warranty 2 years

5 inch touchscreen, Wi-Fi or Ethernet, weather and impact rated housing.

CapXM

Capacity 2 doors or gates, up to 50,000 users

Use Multi-family

Manufacturer warranty 2 years

7 inch touchscreen, Wi-Fi, cellular or wired, 4 relays.

CapXLV2

Capacity 8 doors or gates, up to 50,000 users

Use Large communities and multi-family

Manufacturer warranty 2 years

10 inch touchscreen, ports for 4 Wiegand and 4 OSDP readers.

Access Controllers

LiftMaster's access controllers manage doors and gates from the cloud through myQ Community, the same platform that runs the CapX intercoms.

CAP2D

Capacity 2 doors or gates, up to 25,000 users

Connectivity Cellular or wired internet, PoE

Credentials PIN, card, remote and RFID tag, through 26 and 30 bit Wiegand readers

Manufacturer warranty 2 years

Controls gates, doors, elevators or commercial door operators, local memory keeps entry working when the internet is down, 6,000 event history.

CAPAC Smart Access Hub

Capacity Up to 4 doors or gates, up to 50,000 residents in the cloud

Connectivity Wi-Fi, cellular and Ethernet

Credentials Residents open entrances from the myQ Community app; 3 Wiegand outputs to existing systems

Manufacturer warranty 2 years

Plug and play for new or retrofit sites, controls vehicle gates, pedestrian gates, door strikes or maglocks, cloud scheduling and event alerts.

CAP4AP

Capacity 2 doors or 4 access points, up to 50,000 users

Connectivity Wi-Fi, Ethernet or PoE; cellular through a third-party modem

Credentials Card, remote, RFID tag and LiftMaster mobile credentials; up to 4 readers, Wiegand or encrypted OSDP

Manufacturer warranty 2 years

Outdoor-rated enclosure (IP54, IK07) with provision for a lock, no separate box needed, local setup over a Wi-Fi hotspot.

CAPXAP

Capacity Up to 8 doors (Wiegand), 4 doors (OSDP) or 16 access points with expansion boards, up to 50,000 users

Connectivity Wi-Fi or Ethernet; cellular through a third-party modem

Credentials Card, remote, RFID tag and LiftMaster mobile credentials; Wiegand and OSDP readers

Manufacturer warranty 2 years

Indoor panel, floor-level elevator control, up to 16 relays, expands with CAP4EXPND boards.

CAP4EXPND

Capacity Adds 4 doors or gates and 2 Wiegand readers to a CAPXAP or CAP4AP

Credentials Same Wiegand formats as the host controller, including LiftMaster mobile credentials

Manufacturer warranty 2 years

Expansion board, 4 relays, works with the CAPXAP and CAP4AP control boards.

LiftMaster's published manufacturer warranty depends on the model and how it is used. Its commercial DC and AC operators carry 5 years in commercial use and 7 years in residential use. The RSL12UL and RSW12UL carry 3 years, the LA400UL and LA500UL actuators 2 years, the industrial INSL24UL and IHSL24UL 5 years, barrier operators 2 years on components with the Mega Arm cabinet covered for 10, and the CapX intercoms 2 years. The access controllers carry 2 years.

Specifications and manufacturer warranty terms on this page are taken from LiftMaster's published information as of October 2026 and may change without notice. Confirm current specifications and warranty terms with the manufacturer or your dealer. Gate Core Automation is not responsible for errors in, or changes to, manufacturer information.

LiftMaster Work We Have Done

Boca Raton

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A west Boca Raton swing gate had sagged into the ground and the Viking X390 hadn't run in years. The UL light never went off. Here is how a new board saved a six-year-old motor kit.

Davie

LiftMaster LA400 in Davie: Gate Grinding on the Ground, No App Control

Gate grinding on the ground and no way to open it from an app? A Davie LA400 replacement, gate raised two inches, myQ set up. Call 954-310-6669.

Wellington

Gate Intercom Dead, Only the Remote Worked: A Wellington Smart Intercom Replacement

A Wellington gate intercom went dead and locked everyone out but the remote holder. How we replaced two units with LiftMaster CapXS and set up vendor access. Call 954-310-6669.

Delray Beach

Gate Motor Replacement in Delray Beach: When Salt Air Destroys a 6-Year-Old Operator

A Delray Beach beach-house gate stuck open, operator dead from salt-air corrosion. How we confirmed the failed LiftMaster CSL24UL and replaced it the same day.

What a LiftMaster Is Telling You

What we check first. The error codes. Most LiftMaster operators report the fault on their diagnostic display, so the code tells us where to start before anything gets taken apart.

The gate opened by itself during a power outage.

Most LiftMaster operators have a fire department setting that opens the gate on power failure or when the backup battery runs down. That is a setting doing its job, not a fault, and it can be changed.

Someone pushed the gate and it closed itself.

On models with PosiLock (CSL24UL, HDSL24UL, RSL12UL), the operator powers the gate back closed if it gets pushed off its closed position. It is a security feature.

The gate will not close, or reverses partway.

LiftMaster operators require monitored safety devices, such as photo eyes and safety edges. A device that is blocked, misaligned or failed will stop the gate from closing. That is the operator protecting people, and the device is the first thing to check.

A barrier arm got hit and is off its mount.

Mega Arm and TECHNA arms are built to break away instead of damaging the operator. A Mega Arm arm can usually be re-mounted, and TECHNA also logs the strike and can report it.

The LED display is flashing.

The diagnostic display reports the fault, and the pattern points to where to look.

Repair or Replace

There is no blanket answer on a LiftMaster. What actually decides it:

Which generation you have. LiftMaster updated its operators to newer UL 325 standards, and older units may not take current parts or safety devices.

Whether the operator matches the gate. Every model has a weight and length rating. An operator pushing past it for years will keep failing no matter what gets replaced.

Whether the model is still made. Discontinued units like the SL585 and SL595 can often be kept running, and when they cannot, the INSL24UL is built to replace them on the same footprint.

Manufacturer warranty status. LiftMaster terms change with the model and with residential or commercial use, so it gets checked per unit.

We tell you which one you are looking at before any work starts.

LiftMaster down in Broward or Palm Beach?

Call us and we will find out what failed.Gate motor repair Commercial gate repair Access control and intercom

954-310-6669