Chamberlain is the most trusted brand of garage door openers, designed with the safety of your home and family in mind. Perfect for attached garages, the B4505T will give you years of smooth, quiet performance, while integrated myQ technology lets you control, secure and monitor your garage from the myQ app - anytime, from anywhere. The B4505T is equipped with cutting edge technology.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 anywhereWorks with key by amazon: link to key by amazon in the myQ app for secure and convenient in garage delivery of groceries and amazon packagesNext generation garage technology: improved Wi-Fi connectivity and enhanced memory to support new myQ features and solutionsIntegrated Bluetooth technology: reduces setup time and makes it even easier to connect to the myQ app, other myQ devices and smart home technology solutionsQuiet operation: an ultra-quiet DC motor and soft start/stop smooth operation ensures for comfortable living spaces near the garageTrusted security: security and 2.0 technology provides unmatched encryption (100 billion codes)Additional features: the opener also comes with two 3-button remotes, motion-detecting wall control panel, wireless keypad and safety sensorsAdditional assurances: lifetime motor and belt warranty, 5-year parts warranty, 1-year accessories warrantyBILT intelligent instructions: 3D instructions for a quick, easy installationCalifornia residents see prop 65 warnings Proposition 65 Information WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov or https://www.p65warnings.ca.gov