TThe Liftmaster 8557W is Liftmaster's most powerful belt drive garage door opener. The 8557W should be considered for oversized double garage doors, or on any heavier than normal applications. The 8557 has a 3/4 Hp AC motor. It delivers power and ultra quiet performance that is difficult to match. The motor is backed with a lifetime warranty five (5) years on parts.
The 8557W has built in wifi that will allow you to control your garage door using your smart phone. The Liftmaster MYQ app is free to download, and there are no recurring fees.