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Craftsman 3/4 HP Belt Drive WiFi Compatible Smart-Enabled Garage Door Opener

Quiet belt drive power with WiFi control and battery backup, so the door still opens when the lights go out.
Craftsman MPN CMXB4230 In Stock & Ready to Ship
$299.99
Free shipping on orders over $249
Ships within 24 hours · most orders arrive in about 2 business days
Ships free on orders over $249 $24.99 flat shipping until your order reaches $249.

About Product Overview

Belt drive means quiet operation, which matters if your garage shares a wall with a bedroom or sits below a living space. This Craftsman opener runs on 3/4 horsepower, enough muscle for standard single or double garage doors without the chain-drive rattle you get with cheaper units.

Battery backup keeps the door working through a power outage, and Security+3.0 compatibility means you can add accessories like keypads or smart controls down the line without buying a whole new system. The manual release handle gives you a way in if the power's out and the battery's drained too. It comes with a wall control panel and wireless keypad ready to go, plus WiFi connectivity so you can check or operate the door from your phone.

  • 3/4 HP belt drive motor - quiet operation
  • WiFi compatible for remote access
  • Battery backup included
  • Wireless keypad and wall control panel included
  • Manual release handle for power outages
  • Compatible with all Security+3.0 accessories

The Details Specifications

Ships Ground Travels by ground for safe handling — common for items with a lithium battery, aerosol, or liquid inside. Nothing extra to do on your end; it simply ships by truck instead of by air.
Brand Craftsman
Model / MPN CMXB4230
UPC 012381229246
Weight 31 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

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On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Craftsman. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Craftsman

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