By popular demand we are pleased to announce the introduction of our new Wi-Fi enabled Power Pet door. If you are one of the many thousands of people that love our Power Pet fully Automated Power Pet Door, you will love the pet door that takes the Power Pet to an entirely new level. Our new Wi-Fi Power Pet door allows you to control your door from anywhere there is an internet or cell phone connection. You can open and close the door, Activate or deactivate sensors, select the hold open function, and set an infinite set of timers to set the exact times your pet is allowed in and out, 7-days a week. The free app also gives you full operating instructions that are always fully up to date. High Tech Pet's patented firmware update system also brings new features to your door in real time, as we invent them. Of course, you get all the amazing features of a genuine Power Pet door including, Pet Collar Activation, Safe Gravity Closure with our patent pending Safety Retract System, quiet operation, directional sensing, 4-Way access control and Hold Open option. If it carries the Power Pet brand, it is simply the most amazing pet door on the planet.Comes in a medium size for pets who weigh up to 30 pounds and large for pets who weigh up to 100 pounds (sold separately).