Smart garage door opener comes with built-in myq technology to keep you connected and protected: open, close, and know the status of your garage door from anywhere with a smartphone with the myq appPowered by Chamberlain's MED Lift Power System, the C450 delivers the highest lifting force equivalent capacity compared to the 1/2 power class for effortless lifting and reliable performanceDurable chain drive - rugged steel construction with precision fabrication for dependable performance, use after useSuperior Range - Includes 2 3-button remote controls that let you control up to 3 openers. Exclusive Triband technology boosts remote range up to 1,500 feet for a quicker entrance and exitTrusted Safety & Security - Unmatched Security+2.0 100 Billion code encryption protects against hacking, and Posi-lock anti-theft protection assures that once the door closes, it stays locked