Chamberlain B-353 1/2 HP myQ Smart Belt Drive Garage Door Opener When it comes to affordable reliability, Chamberlain has homeowners covered with the B353 Smart Garage Opener. Built to be long lasting, the B353 comes with a quiet belt drive system, so you don't have to hear the door from another room when it opens and closes. Chamberlains MED Lift Power System, the B353 delivers lifting force equivalent to 1/2 HP, the highest lifting capacity compared to the 1/2 power class for effortless lifting. Steel-reinforced belt drive is constructed with high-grade materials for years of worry-free, long lasting, ultra-quiet operation perfect for attached garages. It also has built-in WiFi, allowing you to connect the opener to the myQApp to open, close and monitor the status of your garage door from anywhere. Includes one 3-button remote that lets you control a combination of up to 3 openers or Chamberlain interior light modules (sold separately); exclusive triband technology boosts remote range up to 1,500 ft. Unmatched Security 2.0 100 Billion code encryption protects against hacking, and Posilock anti-theft protection assures that once the door closes, it stays locked. Box includes: Garage door opener, garage door opener rail, ultra-quiet and strong belt, 3-button remote, safety sensors, push button door, mounting hardware and manual. The durable design features half-horsepower lifting capacity, manufactured for your safety and convenience. Designed specifically for 7 ft. garage doors - extension kits required for 8 ft. (8808CB-P, SKU 113379) and 10 ft. (8810CB-P, SKU 113387) doors. Our online installation videos, pre-programmed remotes, snap-lock rail system and tech support ensure installation goes smoothly.