When it comes to affordable reliability, Chamberlain has homeowners covered with the C-253 Smart Garage Opener. Built to be long lasting, the C253 is a sturdy chain drive garage door opener. It also has built-in WiFi, allowing you to connect to the myQApp to open, close and monitor the status of your garage door from anywhere. Receive alerts and open or close your garage door on your smartphone. Set a recurring schedule to close your garage door or turn your lights on/off. Sync with popular smart devices and platforms. Protect people and vehicles with safety sensors that stop the door from closing on obstructions. Highest level of encryption and monitoring paired with your homes ISP and Wi-Fi router firewalls guard against hacking. MED lift power for standard aluminum doors lift force equivalent to 1/2 HP. 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. (7708CB-P, SKU 112992) and 10 ft. (7710CB-P, SKU 113069) doors.