LiftMaster LA400PKGUL Single Swing Gate Operator Kit

Residential Linear Gate Automation with Battery Backup and Smart Control Options

The LiftMaster LA400PKGUL Single Swing Gate Operator is a 24 VDC linear actuator system designed to automate one vehicular swing gate. Gate capacity varies with leaf length, supporting up to 850 lb at 10 ft, 750 lb at 12 ft, 650 lb at 14 ft, or 550 lb at 16 ft.

The LA400 combines electronic limit programming, automatic force learning, inherent obstruction sensing, battery backup, Security+ 2.0 radio capability, and an onboard diagnostic display in a compact residential gate automation system. The standard package operates from 120 VAC while the gate itself runs on 24 VDC battery power, allowing continued operation during an AC power outage.

The system is also solar capable with the appropriate LiftMaster solar equipment and supports myQ connectivity when paired with compatible LiftMaster connectivity hardware. A monitored LMRRUL photoeye is included with the package for external entrapment protection, while additional monitored devices may be required depending on the gate layout and identified entrapment zones.

Key Features

• Single swing gate operator package for one vehicular gate leaf
• Supports up to 850 lb at 10 ft or 550 lb at 16 ft
• 24 VDC linear actuator with precision-machined all-metal gear drive
• Rated for up to 100 cycles per day
• Approximately 15-18 second travel time for 90° gate movement
• Electronic open and close limit programming
• Automatic force learning with adjustable reversal force
• Built-in obstruction sensing reverses the gate when excessive resistance is detected
• Battery backup maintains operation during AC power outages
• Two 7Ah batteries included in the standard control box
• Security+ 2.0 radio receiver supports compatible LiftMaster remote controls
• myQ compatible with appropriate LiftMaster connectivity equipment
• Solar-ready with compatible LiftMaster solar components
• Timer-to-Close adjustable from 0 to 180 seconds
• LED diagnostic display assists with setup and troubleshooting
• Dedicated inputs for exit, shadow, interrupt, fire department, and monitored safety devices
• Optional expansion board adds additional safety inputs, loop detector support, auxiliary relays, quick-close, and anti-tailgate functions
• Keyed manual release allows the gate to be moved manually when needed

Technical Specifications

• Manufacturer: LiftMaster
• Model: LA400PKGUL
• Operator Series: LA400UL
• Primary Actuator: LA400DC
• Product Type: Single linear swing gate operator package
• Gate Configuration: Single vehicular swing gate
• System Operating Voltage: 24 VDC
• Standard AC Supply: 120 VAC
• Main AC Current: 0.5 A; up to 6.5 A including accessory outlets
• Motor Type: 24 VDC motor with soft start and soft stop
• Operator Duty Rating: Up to 100 cycles per day
• Maximum Gate Capacity at 10 ft: 850 lb
• Maximum Gate Capacity at 12 ft: 750 lb
• Maximum Gate Capacity at 14 ft: 650 lb
• Maximum Gate Capacity at 16 ft: 550 lb
• 90° Travel Time: Approximately 15-18 seconds
• Maximum Travel Range: 115°
• Accessory Power: 24 VDC, 500 mA maximum
• Battery Backup: 2 x 7Ah batteries included
• Battery Backup Capacity: Up to approximately 400 cycles under published test conditions
• Solar Capability: Up to 60 W, using compatible LiftMaster solar equipment
• Entrapment Protection Inputs: Up to 3 on the main control board
• Additional Safety Inputs: Available with optional expansion board
• Radio System: Security+ 2.0
• Remote Capacity: Up to 50 compatible remotes or KPW250 keypads
• Operating Temperature: -4°F to 140°F (-20°C to 60°C)
• Timer-to-Close: Adjustable from 0 to 180 seconds
• Limit Setting: Electronic
• Obstruction Protection: Inherent force sensing plus monitored external entrapment protection
• Usage Classification: Class I, II, and III vehicular swing gate applications per installation manual
• Warranty: 2 years

What Comes with This Kit

• 1 LiftMaster LA400DC primary actuator arm
• 1 Standard LA400 control box with control board
• 2 7Ah backup batteries
• 1 LiftMaster LMRRUL monitored retro-reflective photoeye
• Gate post bracket
• Pull-to-open bracket
• Gate bracket
• Operator mounting hardware
• Warning signs

Remote controls are not included. Additional monitored photoeyes or sensing edges may be required based on the entrapment zones present at the installation.

Installation Considerations

The published LA400 capacity is based on the combined weight and length of the gate leaf. The 850 lb rating applies to a 10 ft gate; a 16 ft gate is rated up to 550 lb. Gate length and maximum weight should not be treated as independent specifications.

The gate must be level, plumb, properly supported by its hinges, and move freely through its full travel before the operator is installed. LiftMaster specifies that the actuator be mounted at least 12 inches above the ground and that the standard control box be installed within 5 ft of the operator.

A push-to-open installation requires the optional 50-19503 push-to-open bracket.

The LA400 requires monitored external entrapment protection before normal operation. The included photoeye provides one monitored device, but every installation must be evaluated individually to determine whether additional photoeyes or sensing edges are required.

Conclusion

The LiftMaster LA400PKGUL is designed for single residential-style swing gates that need battery-backed operation, electronic limits, monitored safety integration, solar capability, and compatibility with LiftMaster access control and connectivity products. Before ordering, match the gate's actual length and weight to LiftMaster's published capacity chart and account for any additional monitored safety devices required by the installation.