Chamberlain garage door openers have both belt and chain drive models with varying control options, including conventional clickers, key chain fobs and Internet interfaces. They are available in a variety of motor sizes from one half horsepower to one and one quarter horsepower, with a battery backup available for some.
Belt drive units are quieter than the chain drive models, but are generally more expensive. Many models are equipped with the company's MyQ Internet interface system, which allows the garage door operation to be controlled with a smartphone, tablet or other connected device. The company provides a free app for download with features including notification of when your garage door opens or closes.