LiftMaster 821LMC-S MyQ Smart Garage Wireless Garage Hub & Sensor Control System


Brand: LiftMaster

Price: $52.90
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   Product Details

  • Compatibilities
  • Accessory Uses
  • Accessory Features
  • Product Media

  •    Accessory Compatibilities Top of Page

    The LiftMaster 821LMC-S is compatible with a majority of gate openers with photoelectric sensors made after 1993, such as:

      LiftMaster, Chamberlain (with a yellow learn button and made between 2010 and 2021), Craftsman, Genie, Overhead Door, Guardian, Stanley Secure Code, and Wayne Dalton

    GateCrafters.com offers more expert assistance than anyone. We have live application specialists available 9 am - 9 pm EST 7 days a week.

       Accessory Uses Top of Page

    The LiftMaster 821LMC-S Smart Garage Control System allows you to manage and operate your garage door's functions and security from your mobile device. The 821LMC-S Smart Garage Control System and the sensor is a new model of the 821LMB, and with a sleek design with a new mounting plate - so wherever you install it - garage doors, ceilings, and walls - it can blend seamlessly into the background. The connection to your mobile device and mounting installation process only takes a few minutes with the Bluetooth Low Energy (BLE) and walk-through instructions located in the MyQ app.

    The LiftMaster 821LMC-S Smart Garage Control System is compatible with MyQ commercial door operators, NOT gate operators. For more information, please reference the Owner's Manual.

    What's Included: Smart Hub, Hub Mounting Plate, Hub Power Adapter, Door Sensor, Adhesive Strips for Sensor, Screws for Sensor, Anchors and Screws for Hub.

    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.

       Accessory Features Top of Page

  • Device Operation Range of Temperature: -4°F to 149°F (-20°C to 65°C)
  • Device Wi-Fi Connection: 2.4 GHz with WPA, WPA2, WPA2/3 and WPA3 security functions
  • Connection with Accessories: Up to 16
  • Accessory Warranty: 1 Year
  • Compatible with Amazon Key (Secure in-garage delivery with subscription to Amazon Prime)
  • Connect using any mobile device and MyQ app
  • 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 developed 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.

       Product Media Top of Page


    Manual: LiftMaster Smart Garage Control Manual
    Manual: LiftMaster Smart Garage Control Quick Start Guide
    Manual: myQ Smart Garage Control Door Sensor Quick Start Guide
    Manual: LiftMaster Accessory Compatibility Chart
    QB ID: 821LMC

       Dynmaic FAQ
    What are the advantages of DC over AC?
    With a DC opener you don’t need an electrician to install it, is it safer because it is low voltage, and power is more readily available through everyday outlets.
    What is the range of use for the automatic driveway gate opening transmitters?

    The range of use for the automatic driveway gate opener transmitters would vary for each automatic driveway gate opener installation; varying on model installed and external factors. 

    The Estate Swing automatic driveway gate openers generally have a range of approximately 300 feet for the automatic driveway gate opener transmitters that comes with each system. .

    The published range for GTO and Lift Master radio controls is 50-100 feet, and must be used in line-of-sight of the gate for safety purposes.

    The Apollo automatic driveway gate openers generally have a range of approximately 300 feet for the automatic driveway gate opener transmitters that comes with each system (when bought from GateCrafters.com).

    How should I run my wire to my automatic gate lock?
    It runs from your control panel. What we suggest is running it along a vertical bar on the gate. You can use zip ties to hold it to the back, matching the color of the zip ties to that of your gate.
    Which automatic driveway gate opener to use with a wood gate?

    Privacy fences usually don't work well with swing automatic driveway gate openers because the solid surface acts as a "sail" in the wind. 

    This adds strain to the motor of the automatic driveway gate opener and generally trips safety sensors that are a part of all automatic driveway gate opener systems. Either you can use an automatic slide driveway gate opener or you would have to manually operate a swing driveway gate opener in windy conditions. It would also be recommended to use an automatic driveway gate lock to lock your driveway gate shut in the closed position. This takes pressure off of the automatic driveway gate opener’s arm when the wind pushes against the driveway gate.

    The easiest automatic driveway gate opener to manually operate would be the Estate Swing E-S 1600/1602 automatic driveway gate opener. The Estate Swing E-S 1600/1602 automatic driveway gate opener has a key release on the top that releases the gears and allows the driveway gate to be moved manually without having to remove the automatic driveway gate opener.

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