![Liftmaster LA400 for single piece gate includes control box [LA400PKGULMC]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/1280x1280/products/15252/227098/liftmaster-la400-for-single-piece-gate-includes-control-box-la400pkgulmc-la400pkgul__08986.1725051299.jpg?c=2 "Liftmaster LA400 for single piece gate includes control box [LA400PKGULMC]")
![Liftmaster LA400 for single piece gate includes control box [LA400PKGULMC]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/500x659/products/15252/227098/liftmaster-la400-for-single-piece-gate-includes-control-box-la400pkgulmc-la400pkgul__08986.1725051299.jpg?c=2 "Liftmaster LA400 for single piece gate includes control box [LA400PKGULMC]")
LiftMaster LA400PKGULMC Single Swing Gate Operator with MyQ Technology
The LiftMaster LA400PKGULMC (LA400) is a premium 24VDC linear actuator swing gate operator designed for residential driveways and light commercial applications. This complete single-gate kit delivers smooth, quiet operation, MyQ® smartphone monitoring and control, and ultra-reliable battery backup.
Perfect for new installations or upgrading existing gates up to 16 ft long or 850 lbs. Fully UL325 compliant with monitored safety devices included.
Have a double (bi-parting) gate? See the LiftMaster LA400 dual swing gate operator kit.
Key Features
- 24VDC linear actuator – smooth, quiet soft start and stop operation
- MyQ® Technology – monitor and control your gate from anywhere via smartphone
- Security+ 2.0® radio – extended range and superior interference protection
- Battery backup – up to 97 days standby or about 400 cycles on power loss
- Solar-ready and extremely power efficient – see our solar kits
- Heavy-duty cast aluminum housing and DC motor
- UL325 compliant – requires monitored safety devices (included)
Gate Capacity
- Maximum gate length: 16 feet
- Maximum gate weight: 850 lbs
Ideal for:
- Residential driveway gates
- HOA and gated community entrances
- Light commercial properties
Need more capacity? The LA500 handles gates up to 18 ft or 1,200 lbs.
What's Included in the LA400PKGULMC Kit
- LA400 linear actuator arm
- Control box (LA400CONTUL) with built-in receiver
- Security+ 2.0 built-in receiver
- Monitored safety photo eye (LMRRUL)
- All necessary mounting hardware
- Two 7Ah batteries for backup power
Everything you need for a complete single-gate installation.
Single or Dual Gate?
| Your gate | Order this |
|---|---|
| One gate leaf | This kit — LA400PKGUL |
| Two gate leaves | LA400PKGUL-DUAL — two arms, one control box |
| Adding a second leaf later | This kit plus one LA400DCS secondary arm |
Compatibility
Compatible Remotes (Security+ 2.0)
- 811LMX • 813LMX • 893MAX • 890MAX • 892LT • 894LT
Popular Accessories
- 828LM Internet Gateway for MyQ connectivity
- MG1300 gate monitor
- LA400XL20W solar package
Manuals, Diagrams & Parts
Download the LA400 Installation Manual (PDF) — full programming, wiring and the complete error code list.
Download the LA400 Product Brochure (PDF)
LA400 parts breakdown diagram · LA400 replacement parts
LiftMaster LA400 Error Codes & Troubleshooting
Quick reference for the most common diagnostic codes on the LA400 control board:
| Code | Description / Solution |
|---|---|
| 31 | Main control board failure – disconnect power for 15 seconds and reboot; replace the board if it persists |
| 32 / 33 | Linear drive disengaged – re-engage the arm and check wiring |
| 34 | Absolute position encoder error – check cable connections, then reprogram the limits |
| 35 | Max run time exceeded – check for an obstruction and reprogram the limits |
| 40 / 41 / 42 | Battery faults – check you have not fitted a 12V battery on a 24V system or the reverse |
| 60 | Minimum monitored entrapment device not installed – check the photo eye connections |
| 61–68 | Eye or edge held or triggered too long – check alignment and obstructions |
| 91 / 92 | Force reversal – check for mechanical binding or an obstruction |
| 93 / 94 | RPM or stall reversal – check wiring and that the arm is engaged and free to move |
| 99 | Normal operation – no action needed |
The complete error code list and detailed troubleshooting is in the installation manual linked above.
Why Choose the LiftMaster LA400PKGULMC?
- Industry-leading battery backup and solar-ready performance
- MyQ smartphone control with a free app and no subscription fees
- Proven reliability across thousands of residential and HOA installations
- Quiet, smooth operation that extends the life of gate hinges and hardware
- 2-year manufacturer warranty
Product Summary
LiftMaster LA400PKGULMC – 24VDC single swing gate operator with MyQ, Security+ 2.0 and a full monitored safety package, for gates up to 16 ft or 850 lbs. For a double gate see the LA400 dual kit; for heavier gates see the LA500.
