The LA400 LiftMaster is a popular 24V DC residential swing gate opener known for its robust performance and homeowner-friendly features. This linear actuator system is designed to automate swinging driveway gates with smooth, quiet operation. It delivers high starting torque with a soft start/stop motion, which protects your gate hardware and extends the operator’s lifespan. In practical terms, the LA400 LiftMaster can handle gates up to 16 feet long (per gate leaf) and weighing as much as 850 pounds under optimal conditions.
This capacity makes it suitable for most home installations, from lightweight decorative iron gates to solid wood gates, without straining the motor. The opener’s durability and reliability have made it a preferred choice for residential gate automation, providing homeowners with a dependable solution for secure and convenient access.
Key Features of the LA400 LiftMaster Gate Opener
Powerful DC Motor with High Capacity
The LA400 is driven by a strong 24V DC motor that delivers excellent torque for moving heavy gates. It’s rated to automate swing gates up to 16 ft. long and about 850 lbs in weight (per leaf) in ideal conditions. Thanks to the efficient motor and gear design, it can open a gate to 90° in roughly 15–17 seconds, which is faster than many low-end openers. The soft start/stop feature gradually accelerates and decelerates the gate, preventing abrupt jerks and reducing wear. This means even large residential gates are handled smoothly and quietly.
Battery Backup and Solar Compatibility
The LA400 runs on a battery-backup system, so it will continue functioning during power outages without missing a beat. Two rechargeable 7Ah batteries (included in the standard kit) keep your gate operational for dozens of cycles when the power is out. LiftMaster’s advanced power management maximizes this backup time – in fact, with infrequent use, the system could sustain itself for weeks on battery alone. Additionally, the opener is solar-ready: you can connect a LiftMaster solar panel to charge the batteries, either supplementing the AC power or replacing it for remote installations. This gives you extra insurance that your gate will work even in extended outages, and offers an eco-friendly power option.
Safety Reversing and Obstruction Sensing
Safety is paramount with gate openers, and the LA400 includes multiple protections. It has inherent obstruction sensing (built-in to the motor controller) that detects if the gate hits an object and will immediately stop or reverse the gate upon contact. Importantly, the LA400UL models come with a monitored safety photo-eye sensor in the package. This photocell shoots an infrared beam across the gate opening; if anything breaks the beam (a child, pet, car, etc.), the closing gate will stop and reverse, preventing entrapment or injury.
The system is designed to meet the latest UL325 safety standards, which means you must install these external entrapment protection devices for safe operation. The opener’s controller monitors the photo-eye (or any safety edge sensors, if used) to ensure they are functioning – the gate won’t operate if a required safety sensor is faulted, which adds another layer of protection. Homeowners should test the reversing feature monthly by blocking the gate’s path to verify it reverses on cue.
Secure Access and Controls with the LA400 LiftMaster Gate Opener
With the LA400, you get modern security technology for controlling your gate. It features LiftMaster’s Security+ 2.0® radio receiver built-in. This is an encrypted remote control system that guards against code hacking (each click uses a unique code) and provides extended range for your remotes. Up to 50 remote controls can be programmed directly into the receiver memory (more if you use additional receivers), which is plenty for the average household and then some. The opener also supports add-on access controls like wireless keypads for guests or deliveries, and vehicle loop sensors for automatic exit.
A particularly useful feature for security is the Quick-Close (Anti-Tailgate) option: if equipped with the optional expansion board, the LA400 can be set to close the gate immediately after a vehicle clears the safety sensor, preventing someone from sneaking in behind your car. This anti-tailgating capability is great for peace of mind, ensuring your gate isn’t left open longer than necessary.
Smart Connectivity (MyQ Enabled)
In today’s connected world, you’ll appreciate that the LA400 LiftMaster can integrate with smart home technology. It is MyQ® enabled, meaning with the addition of an Internet Gateway or LiftMaster’s Wi-Fi controller, you can monitor and control your gate via a smartphone app from anywhere. For example, you could get alerts if your gate opens unexpectedly, or use your phone to open the gate for a visitor while you’re not home.
This system can also tie into a broader LiftMaster myQ ecosystem if you have garage door openers or other devices on the platform. While the Internet Gateway or the newer onboard Wi-Fi versions might be an extra accessory, the result is a smart gate that adds convenience and even voice control (via services like Google Assistant or IFTTT integrations). Homeowners who don’t need app control can simply rely on traditional remotes and keypads, but it’s nice to know the LA400 is ready for smart upgrades.
Dual-Gate Ready with Wireless Communication
If you have a double swing gate, the LA400 is available as a dual kit (LA400PKGUL) which includes two actuator arms – one as the primary and one secondary. The system supports bi-parting gate operation, meaning it can synchronize the movement of both gate leaves, including an adjustable delay so one leaf waits for the other to close first (important for overlapping gates or to ensure a tight seal). A great installation feature is the wireless dual-gate communication between the two arms.
Instead of running a cable across your driveway to connect the gate operators (which would require trenching or overhead conduit), the LA400 uses a wireless link to coordinate the two sides. This eliminates the need to dig across your driveway in most cases, saving labor and keeping your driveway intact. (You will still need to run wires on each side for power and to connect the photo-eye, but not between the gate halves). This wireless feature speeds up installation and is a big plus for DIY installers.
Durable Construction and All-Weather Use
The LiftMaster LA400 is built with heavy-duty materials to ensure longevity. The linear actuator arm has a cast aluminum housing and internal stainless steel components, making it tough yet lightweight. The chassis and brackets are zinc-coated steel to resist rust and corrosion. The control box enclosure is rated NEMA 4X, which means it’s weather-resistant and dust-tight – capable of withstanding rain, dirt, and insects when properly installed. This opener is rated for about 100 cycles per day of operation, which is well above what a typical household would need (even busy families rarely hit 100 gate openings in a day).
It’s nice to know the motor and gear system can handle that kind of duty if necessary, and it also means light commercial use (for example, a small apartment or farm gate) is within its capabilities. In terms of temperature, LiftMaster operators generally are designed to work in extreme cold and heat (with proper battery maintenance), though it’s always wise to check the spec sheet if you live in very harsh climates. Overall, the LA400’s robust build and LiftMaster’s 2-year warranty give homeowners confidence that their investment will last. Regular maintenance will keep it running smoothly for many years, as many users attest that this model is “in a class of its own” for reliability among residential gate openers.
Additional Features That Enhance the LA400 LiftMaster Gate Opener
The LA400’s control board offers useful customization: an adjustable auto-close timer (you can set the gate to automatically close after, say, 30 seconds if you forget to, or disable auto-close if you prefer manual control each time). There are also programmable auxiliary relays on the board, which advanced users or installers can use to hook up extras like driveway gate lights or alarms that trigger when the gate opens. The system is HomeLink® compatible, which means you can program most built-in car remote buttons to operate the gate (though newer vehicles might require an adapter bridge for Security+ 2.0, depending on the car).
For emergency access, the LA400 has a manual release mechanism on the actuator – typically a coded disconnect or a handle – that allows you to disengage the arm and move the gate by hand if needed (for example, if the motor is malfunctioning or you don’t have power and need to open the gate immediately). This manual release is a standard feature, but remember to use it only when the gate motor is turned off and the gate is not moving, to avoid any safety hazards. In sum, the LA400 LiftMaster is feature-rich, covering everything from safety, security, and smart tech to raw performance. It’s this well-rounded feature set that often justifies its premium over basic gate opener models.
Manual LA400 LiftMaster Installation Guide (DIY vs. Professional)
One big question for homeowners is whether the LA400 LiftMaster is a do-it-yourself installation or if it requires professional help. The answer can depend on your comfort with tools and the specifics of your gate, but let’s break down the installation process and what to expect.
LA400 LiftMaster Installation Guide Manual
Installing the LA400 involves both mechanical assembly and some electrical wiring. LiftMaster provides a detailed installation manual, and the basic steps can be summarized as follows:
- Mount the Gate Hardware: Begin by mounting the actuator arm to your gate and gate post (or pillar). The kit includes brackets for a standard pull-to-open configuration (gate opening inward). You’ll need to position and secure the brackets (usually by drilling into the gate and post) and then attach the LA400 arm. Ensuring the proper height and alignment as per the manual is critical for smooth operation. (If your gate needs to swing outward, a different bracket kit is required for a “push-to-open” setup.) Use clamps and a level during this step to get everything lined up correctly before bolting it down.
- Install the Control Box: The control box (which houses the control board electronics and batteries) should be mounted nearby, typically on a post or fence within a few feet of the gate hinge. Choose a location that is sheltered from direct sprinkler spray and reasonably accessible for future maintenance. Secure the box using the provided hardware. The control box is weatherproof and lockable, so once it’s in place you can safely stow the brains of the system there.
- Wiring the Components: Next, connect all the components to the control board. This includes running the cable from the actuator arm into the control box (usually through conduit or protective tubing) and wiring it to the marked terminals. Also, mount and wire the photoelectric safety sensor that came with the kit – this involves placing the reflector across the driveway and the sensor on the control box side, aligning them, and connecting the sensor’s wires to the control board. If you have dual gates, you’ll also wire the second arm to the board or connect it wirelessly according to the instructions. Attach any other accessories at this time as well: keypad wires, exit loop sensor, push buttons, etc., if you are using them. The LA400’s control board has clearly labeled, user-friendly input terminals, which simplifies this process – just be sure to follow the wiring diagram to the letter to avoid mix-ups.
- Connect Power (Electrical Setup): The LA400 is low-voltage, so it typically uses a small transformer that plugs into a standard 120V outlet, outputting 24V to the control box. You will connect this 24V power supply into the control board’s power terminals. (Many installers run the transformer’s low-voltage wire through PVC conduit to the control box for protection.) If using solar panels, you would connect the panel’s regulator to the control board and batteries according to LiftMaster’s solar wiring instructions. At this stage, also install the batteries in the control box and hook up their leads to the board. Double-check all power connections are tight, and attach a proper earth ground rod to the system as instructed – grounding protects against lightning and electrical surges. Once everything is wired, you’ll turn on the power (there’s often a power switch or you connect the battery last) to energize the system.
- Programming and Setup: With the unit powered, it’s time to program the gate limits and settings. The LA400 uses an electronic limit system, so you don’t have to manually adjust bolts for open/close position – instead, you’ll put the system in a learn mode, then move the gate leaf by hand or by using the controller to the desired open and closed positions, and set those in memory. The manual walks you through using the controls on the circuit board (or the external reset/test button) to do this. You’ll also set the force sensitivity (how hard it pushes before reversing) if needed, and adjust the auto-close timer dial if you want the gate to close automatically after a certain period. Most kits are pre-set to a default (like 30 seconds auto-close, moderate force) which you can tweak. The LED diagnostic display on the board will help confirm things like limit setting and sensor status, making this process easier.
- Test Safety Functions: Before putting the gate into regular use, thoroughly test the safety features. Close the gate and wave an object in front of the photo-eye sensor to ensure the gate stops/reverses when the beam is broken. Also test the gate’s inherent obstruction sensing by holding the gate or placing a soft object in its path – it should reverse upon contact (be careful doing this with a moving gate; use something like a cardboard box to be safe). Adjust the force setting if the gate doesn’t reverse properly. Additionally, unlock the manual release and practice opening the gate manually – this is important to know in case of an emergency or if you need to service the gate. Remember to only use the manual release when the gate operator is turned off and stationary.
- Final Checks and Remote Setup: Lastly, do a full system test. Run the gate through multiple open and close cycles using the remote or keypad, and watch for smoothness, alignment, and any issues. Listen for any odd noises that might indicate binding or improper alignment. If you have dual gates, ensure they close together nicely without collision (adjust the bi-part delay if needed so one leaf waits for the other). Once everything is moving well, program your remote controls into the onboard receiver so you and your family can operate the gate wirelessly. The LA400 supports many remotes; the manual will have a simple step-by-step (usually pressing a learn button and then the remote button). Also program the wireless keypad code if you have one, following its instructions. After programming, test each access device (remote, keypad, intercom, etc.) to confirm they trigger the gate properly. At this point, your LA400 LiftMaster installation is complete and ready for daily use!
These steps are a general overview; always refer to the official LiftMaster LA400 manual for detailed instructions and safety warnings during installation. Take your time with each step, as a careful setup will ensure long-term reliable performance.
Safety and Maintenance Tips for the LA400 LiftMaster
Once your LA400 gate opener is up and running, keeping it safe to use and well-maintained is crucial. Here we’ll cover important safety guidelines (much of it drawn from LiftMaster’s manual and UL325 standards) and the routine maintenance tasks that homeowners should know about.
Safety Guidelines for Operating the LA400
Automated gates can pose hazards if used improperly, so always follow these safety rules:
- Keep children away: Never let children play with gate controls or remote fobs. The remote transmitter should be kept out of reach of kids at all times. Likewise, don’t let anyone ride on the gate or stand in its path. The LA400 gate moves with enough force to cause injury if someone is in the way.
- Stay clear of a moving gate: Make sure no one crosses the path of the moving gate and no objects obstruct the gate’s travel. An automatic gate is meant for vehicular use only – it’s strongly recommended to have a separate pedestrian gate for people to walk through. This prevents accidents where a person might get hit or pinched by the gate. The LA400’s sensors will help, but never assume they’ll catch everything; always be vigilant that the area is clear before activating the gate.
- Test the auto-reverse monthly: The LA400 is designed to reverse on contact or stop when its sensor beam is broken. It’s important to test these safety features at least once a month. To test, place a solid object like a roll of paper towels in the gate’s path and trigger it to close – it should stop and reverse upon hitting the object. Also test the photo-eye by blocking the beam while the gate is closing – the gate should stop or reopen. If the gate does not reverse when it should, immediately turn off the opener and have it inspected/adjusted. You may need to increase the sensitivity or check the sensor alignment. Never increase the force to a point where it might not reverse properly; safety first. After any adjustments, retest the gate’s reversal function.
- Manual release usage: Learn how to use the manual release on your LA400 (typically a key or handle on the actuator) but only use it when the gate is not moving. Disconnecting the operator while it’s running can be dangerous. If you need to manually open the gate (for example, during a power outage and your battery is depleted), cut power to the opener, wait for any movement to stop, then release the arm and move the gate slowly. Keep others clear while doing this. After manual use, remember to re-engage the opener before restoring power.
- Entrapment protection devices: Ensure that all required safety devices are installed and functional. The LA400 comes with a monitored photo-eye sensor; do not disable it. In fact, you can add additional safety edges or photo beams in hazard areas (for instance, a secondary beam higher off the ground if kids on bikes frequent the area). The controller can monitor multiple devices. These devices are there to protect you and your property. LiftMaster’s compliance with UL325 means the system will not operate if these sensors are not correctly installed or if they fail – if you notice the gate opener is beeping or not moving and the diagnostic LED indicates a “safety sensor” issue, address it promptly (could be dirt on the reflector, misalignment, or damage). Never tamper with or override the safety sensors; if they are causing nuisance stops, it indicates an adjustment is needed.
- Keep the gate area maintained: Safety also extends to the gate itself. Keep the gate in good condition, with hinges greased and secure, and no protruding nails or screws that could snag on vehicles or people. A gate that drags or doesn’t swing freely will make the opener work too hard and could lead to a failure or unsafe operation. Trim any vegetation that might interfere with the gate’s movement or the sensor beam. Do not store anything in the gate’s path, even when it’s open.
- Vehicle considerations: If you’re pulling in or out, always wait for the gate to fully open before driving through, and never try to race the gate. If your LA400 has the Quick-Close feature enabled, be aware that the gate might begin closing as soon as you pass the sensor loop – make sure any car behind you also stops and doesn’t try to follow you in closely. Conversely, if you have guests, instruct them not to tailgate through; they should use their own access code or remote, or you as the host should trigger the gate again for them. Many accidents happen from misuse, not equipment failure.
By following these safety guidelines, you’ll greatly reduce the risk of injury or damage. Modern gate openers like the LA400 are very safe when installed and used properly, but they do have moving parts that command respect. Educate your family members about gate safety as well – for instance, discourage playing near the gate or trying to “beat the gate” when it’s closing.
LA400 LiftMaster Pricing and Value
For many homeowners, the decision to invest in a gate opener comes down to cost vs. benefit. The LA400 LiftMaster is positioned as a premium residential gate opener, and its pricing reflects that. Let’s talk about how much it costs and whether it’s worth it.
Pricing: The price of the LA400 will vary depending on where you buy and whether you need a single-gate or dual-gate setup. As of recent data, a single-arm LA400 kit (LA400PKGUL for one gate) tends to be in the ballpark of around $1,200 to $1,500 USD for the equipment. This usually includes the actuator arm, control box with electronics, two backup batteries, a set of safety sensors, and often a couple of remotes. The dual-gate kit (LA400PKGUL-DUAL, for two gates) typically costs roughly $1,800 to $2,500 USD for the full package.
For example, one retailer lists the dual kit on sale at about $1,828 (down from a ~$2,400 list price). These figures can change with market conditions, and some installers or dealers might package the opener with installation services at a different rate.
In comparison, basic DIY gate opener kits (like those from Mighty Mule or Ghost Controls) might cost only $300-$800 for a single gate set. So yes, the LA400 is a significant investment by comparison. It sits at the higher end of the residential opener spectrum, approaching light-commercial opener pricing. There are also heavier-duty models (LiftMaster LA500, or other brands’ commercial operators) which can cost even more (often $2,000+ just for equipment). So the LA400 is premium, but not the most expensive out there.
What you get for the price: The key is that with the LA400, you are paying for quality and performance. The old adage “you get what you pay for” applies here. LiftMaster’s build quality is generally excellent – the components (motor, gears, housing) are built to last in a way that cheaper openers often are not. One professional installer commented that “no other arm type residential gate operator comes close” to the LA400 in terms of reliability and longevity. That kind of reputation is worth considering. If you install a cheaper opener and it fails in two years, you might end up spending more replacing or repairing it than if you had invested in a LiftMaster from the start.
