LiftMaster LA400DCS Secondary Replacement Arm with 40ft. Extension Cable | 24VDC

LiftMaster LA400DCS Secondary Replacement Arm with 40ft. Extension Cable | 24VDC

Brand: LiftMaster
Sale Price: $589.80
In Stock
Quantity:



    Description Top of Page

Residential 24VDC Linear Actuator Secondary Arm Only

Replacement LA400DCS Secondary Arm for LiftMaster LA400DC.

ONLY includes the arm, not the control box. 

The manufacturer suggests that the product be professionally installed


The LiftMaster / Chamberlain LA400 Gate Opener is a residential and light commercial linear actuator.

  • Gate Materials: Wood, Steel, Aluminum, Vinyl, Chain Link, and others.
  • Weight and length: Up to 16' in length OR 850 lbs.
  • Max degree of opening: 100°
  • Gate Post or Column size (pull to open ): Max 7" x 7" post or gate mounted 4" from the rear face of a column.
  • Push to Open: Yes, setback above does not apply (Not Included)
  • Solar Compatible: Yes
  • Power: 120V Single Phase (Standard control box).
  • Power Wire: 120Vac
  • Power Wire: 24Vac Transformer
  • Operating Temperature: -4°F (-20°C) to 140°F (60°C)
  • GateCrafters.com offers more expert assistance than anyone.
    If you need help deciding if this gate opener has the abilities that are right for your gate we have live application specialists available 9am - 9 pm EST 7 days a week or try our exclusive gate opener recommendation tool 24 hours/day.

        Compatibility Top of Page

    LiftMaster LA400UL Dual Swing Gate Opener

        Features Top of Page

    • LARGE, 24V MOTOR - It is one of the largest swing gate motors available for any residential estate gate opener. It is capable of handling driveway security gates up to 850 lbs., which is more than many heavily ornamented electric gates weigh.

    • CONTROL BOARD, EASY READ DIAGNOSTICS - The LED light diagnostic on the control board permits easy diagnostics of problems or missing connections. This allows efficient repair and swift continuation of normal electric gate operation.

    • SOFT START/SOFT STOP - Soft start/soft stop is a feature in which the control board, during the set up process, learns where the opening and closing points are for the swing of the gate. Then during normal operation the gate operator automatically slows the motion of the gate to smoothly meet with the gates destination point. This reduces stress on the gate and operator for extended functionality.

    • BI-PART LATCH - Designed to allow one gate leaf to begin opening or closing independently for those gates that have overlapping leaves.

    • ADJUSTABLE CLOSING TIMER - Set your gate to close between 0 and 120 seconds after reaching the full open position.

    • ELECTRONIC LIMIT SWITCHES - Set the limit switches with just the push of a button for accurate, easy setup.

    • ON BOARD RADIO RECEIVER - It is compatible with a number of wireless remotes and allows operation of a number of devices with one remote - such as the garage door and the gate opener.

    • INPUT TERMINALS - For convenient addition of accessories requiring like loops, sensing devices and controlling devices.

    • QUICK. SAFE AND SECURE MANUAL RELEASE - The LA-400 operator comes with a manual release key that can be used should the power fail and the backup battery is not charged. This ensures that the driveway gate can be opened without damaging or disconnecting any components.

    • HIGHEST LEVEL OF SAFETY - This operator is designed with separate force adjustments for obstructions. If the gate meets an obstruction while it is opening it will reverse to close, and if it is closing it will reverse to open. Additionally, the LA-400 is UL 325 Listed.

    • INCREASED CONVENIENCE - The built in MyQ system will allow you to open your gate right from your smartphone.

    • SOLAR-READY ULTRA-RELIABLE SYSTEM - Simple solar conversion delivers power when you need it most and is extremely power efficient at all other times to maximize solar performance.

    • WIRELESS DUAL-GATE COMMUNICATION - Eliminates expensive conduit costs and unsightly driveway scars.

    • PROGRAMMABLE AUXILIARY RELAYS - Easily add additional features, such as warning lights/alarms.

    • ANTI-TAILGATE - Prevents unauthorized access. Gate will pause when closing as vehicle pulls onto interrupt loop or breaks photo beam. Once vehicle backs up, gate will continue to close.

    • HOMELINK® COMPATIBLE - Version 4 and higher.

    • COMMERCIAL-DUTY CAST ALUMINUM HOUSING WITH HEAVY-DUTY DC MOTOR - Powerful enough to perform in the most demanding applications

    • KEYED MANUAL DISCONNECT - when unlocked, allows gate to be operated manually.

    • INHERENT REVERSING SENSOR - detects obstructions or increased loads. Reverses gate when closing or stops/reverses the gate when opening.

    • FIRE DEPARTMENT COMPLIANCE - allows gate to auto open upon loss of AC power or battery depletion

    • SURGE SUPPRESSION - provides industrial surge and lightning protection against strikes up to 50 feet away.

    • PARTY PASS - allows for the gates to be held open for an extended period of time, ideal for parties.

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    GateCrafters.com has the resources you need. How do you use your gate opener system once you get it? GateCrafters.com is the only retailer to give a real answer to this question. We have develop videos for installing many of our gate openers and products and write DIY focused manuals for most gate openers and have individual instructions for each accessory to be installed with each gate opener.
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        Specifications Top of Page

    Dimensions: 4.5" (H) x 37.4 (L) x 4 (D)

    Weight: 13.2 lbs. 

    Arm extends up to 53.5"

        Included Top of Page

    Includes the LA400DC Secondary Replacement Arm and 40ft. Extension Cable ONLY

    No Control Box

        D⁣IY Installation Top of Page

    DIY Install

    For over a decade GateCrafters.com has been the premier online retailer of gate openers and gate opener accessories. Because of our extensive technical and installation knowledge, we are authorized to sell to the DIY market. You can access our trained technical staff 7 days a week from 9 am to 9 pm, EST. When you DIY install your gate opener system, you will save $1000s of dollars over the life of your gate opener. You will have working knowledge of your gate opener installation and how the gate opener works. This will make it easier for you to troubleshoot your system and perform routine maintenance, if needed in the future.

    GateCrafters.com is the DIY factor.
    GateCrafters.com further adds to most of our gate openers for easier DIY installation. We have developed exclusive components (example: easy adjustable mounting brackets), customized instructions, and offer a full spectrum of accessories to truly cover all aspects of the installation of your gate opener. In addition we have the largest staff of factory trained technicians in the US.

        DIY Additions Top of Page
  • Order specific customized accessory wiring instructions
  • 360 degree accessories - we can take you through exit, entry, safety, power, and all other minute details to create a fully rounded kit.
  • Free 24/7/365 Installation Support
  • Free 7 day/week Technical Support
  • Largest Number of Certified Techs in America
  • Free assistance to find the right gate opener for your gate
  • Free systems design assistance to match the right accessories to fit your needs.
  • Extremely competitive pricing
  • Free shipping on all accessories purchased with a gate opener
  • We stock replacement parts
  • Many brands of many types of accessories, enough to handle just about any operational situation you can imagine
  • GateCrafters.com has actual experience.
    We have a testing area, we have factory and internal training courses, we build gates and have our own gates that are automated, we attended all industry trade shows in multiple countries and are a member of the AFA, and we pay visits to our chosen manufacturers' factories. All these factors are what have lead to us having so many exclusive additions. When you see and actually use as many products as we have you tend to have many ideas for minor changes that have major impacts. We acted on these ideas and have utilized them to help thousands of customers automate their gates.

        Tools & Supplies for Installation Top of Page

    The following tools and supplies are suggested in the manufacturer manual for optimal installation. They are not provided by Gate Crafters, however, most tools are available at local hardware stores for purchase or rental.

    Please refer to the Installation Manual for Tools Needed.

    Depending on the type of gate, power supply and contributing environmental factors additional tools or supplies may be needed. Please review the product manual associated with this gate opener model for further details.

        Customer Testimonials Top of Page

    Be the first to write a testimonial for this product. Please send them to Testimonials@GateCrafters.com.

        Product Media Top of Page


    Manual: LiftMaster Model LA400PKGUL Product Guide
    Manual: LiftMaster LA400UL Installation Manual
    QB ID: LA400DCS

       Reviews Top of Page