Chamberlain B4603T Smart myQ Smartphone Controlled-Ultra Quiet, Strong Belt Drive, Wireless Keypad Included, Garage Door Opener

(10 customer reviews)


  • Smartphone control: Download the myQ app and follow the steps to connect your new garage door opener so you can control, secure and monitor the garage from your smartphone – anytime, from anywhere
  • Integrated advanced LED lighting: Purposely brightens high traffic areas of the garage, motion activated, 1,000 lumens
  • Quiet operation: An ultra-quiet DC motor and soft start/stop smooth operation ensures for comfortable living spaces near the garage
  • Next generation garage technology: Improved Wi-Fi connectivity and enhanced memory to support new myQ features and solutions
  • Integrated Bluetooth technology: Reduces setup time and makes it even easier to connect to the myQ app, other myQ devices and smart home technology solutions


Your garage is a hard-working extension of your home with cars, bikes and dog walkers coming and going daily. Make your garage work for you. Simplify your life, safeguard your family and experience the next generation in garage technology with the B4603T Chamberlain® Garage Door Opener powered by myQ®.

From the manufacturer

C870 Features and Benefits





Max Lift Power System

Super strong, reliable and the highest lifting capacity compared to 1¼ power class. Anti-vibration technology. Works in excessive heat, cold, and humidity.

Wifi enabled for myQ

With myQ, you can open and close your garage door from anywhere, receive real-time notifications when it’s left open, and securely invite up to three people to control your door.

Durable Chain Drive

Rugged steel construction with precision fabrication for dependable performance, use after use.

Battery Back-Up

Works when the power is out. Open/Close your garage door during power outages with built-in battery back-up.

What’s in the box





Two 3-Button Remotes

Includes two 3-button Security+ 2.0 remotes. Secure encrypted technology boosts remote range up to 1,500 feet for a quicker entrance and exit. Security+2.0, the highest level of encryption, prevents hacking and provides peace of mind. Control up to three garage door openers each.

Safety Sensors

Easy to install Safety Sensors detect for obstructions and automatically reverse the garage door before causing any damage.

Wireless Keypad

Unmatched Security +2.0 encryption protects against hacking, and Posilock anti-theft protection assures that once the door closes, it stays locked. Easy-to-follow wireless programming allows for setup in seconds and eliminates the need for electrical connections to the side of the garage opening.

Motion Detection Control Panel

The motion-detecting control panel allows easy programming of remote controls, keypads, and MyQ lighting accessories, and it will turn lights on automatically when motion is detected.

myQ Features





In-Garage Delivery

No more missing or wet Prime packages. Backed by Key by Amazon..

Control from Anywhere

Open and close your garage from your smartphone.

Real-time Notifications

Get alerted anytime your garage door opens, closes or is left open.

Access Sharing

Securely invite up to three people to control your devices with myQ Guest.

Link Accounts and Do More





Google Assistant

Free for a limited time. Ask Google if your garage is open, then tell Google to close it.

Key by Amazon

Prime members in select areas can opt-in for secure in-garage delivery for all their packages.


Free for a limited time. Connect myQ to hundreds of your favorite apps and devices to create completely custom schedules.


Come home to a brightly lit home and have your lights come on when you open the garage door.

Chamberlain Advantage





Easy Installation

Online install videos, pre-programmed remotes, snap-lock rail system, and knowledgeable support makes installation simple.

Safety and Security

With Security+ 2.0, feel reassured that your garage is secured with every remote click.

Superior Range

Secure encrypted technology boosts remote ranges up to 1,500 feet to enable you to get in and out of your garage faster.


At Chamberlain, we use only the highest quality hardware and software in our products to guarantee they’ll deliver optimal performance for years to come.

Additional information

Weight 33 kg
Dimensions 27.25 × 13.13 × 9.94 cm
Part Number


Item Weight

33 Pounds

Product Dimensions

27.25 x 13.13 x 9.94 inches

Country of Origin


Item model number





Door Opener

Item Package Quantity


Included Components

Wireless keypad Motion-Detecting Wall Control Safety Sensors 2 x 3-Button Remotes Motion-Detecting Wall Control Wireless keypad Safety Sensors 2 x 3-Button Remotes

Batteries Required


Warranty Description

Accessories: 1 Years Belt: Lifetime Parts: 5 Years Motor: Lifetime



Date First Available

July 22 2021



10 reviews for Chamberlain B4603T Smart myQ Smartphone Controlled-Ultra Quiet, Strong Belt Drive, Wireless Keypad Included, Garage Door Opener

  1. GSD_Lover_NY

    Love my garage door opener!I had it professionally installed.. so 3 stars for install. Love love love how quiet it is. App works great too! No issues. Highly recommend! I installed the doorbell option near the ground so I can walk in garage via man door & open garage door hitting button with my foot. The install guys said I was the first for that but said it was a good idea. The led is not a white (I have 2 white led lights on both sides of opener, opener is more of a yellow color in comparison. I thought it would be brighter but that’s OK I love the unit!!

  2. Hao Ta

    I love it so much, I bought 2.The only complain I have with this motor is the package only came with 7 foots of rail. My garage uses 8 foots rails and I have to go buy extra rail kits for it.Other than that, i am extremely happy with the purchase. Installations take some time to finish but the instructions was very easy to follow. Definitely will buy it again if my friends decided to change their garage.

  3. Terry

    Works great.Called a repairman to fix Liftmaster garage door opener. He could not fix it. I bought this from Amazon and installed it myself. It works great. The Liftmaster only lasted 6 years and had poor customer service. My old craftsman lasted 15 years.

  4. Andrew

    Solid unit. 3rd party app required for AlexaOverall great unit. So much quieter than our old Genie unit. I won’t say it was the easiest install, but instructions were pretty clear, so it’s definitely doable if you’re somewhat handy… took about 4hrs by myself, mainly because the old brackets didn’t line up perfectly. The MyQ app has been very reliable so far, especially since our WiFi router is in the garage. Although, I did have to download a 3rd party app, “LiveKey”, to get it working with Alexa… I assumed there would at least be an Alexa skill for MyQ since it works with Amazon Key, but none I could find at the time of this posting.

  5. Anthony J. Lambert

    Quiet OpenerGreat product competitively priced.

  6. D.M.

    Nice and quietI have never had a door so quit

  7. Scott Comand

    Bt4603This model does not have battery back up and the wall button is different from the picture. Love the opener, really wanted battery back up. Looking in to a back up system without full replacement

  8. Gary Ketterling

    Good opener for the moneyIt is very quiet and smooth operating, love the LED lights and the app to operate the door from my phone.

  9. 1176

    ExcellentI never knew such garage bliss was possible. This thing is super quiet compared to the old screw drive grinder I had before. And the wifi set up is easy and works great. We are truly living in the future.

  10. Geovanna

    QuiteIt’s really quite and the app is very easy to use

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