Perfect Pet e-Cat Pet Door

Transparent, unbreakable lexan flapwith 4-way operation Weatherproof design for exterior or interior use Perfect for cats (and small dogs too!) Up to 25 lbs One e-sensor collar and 9 volt door battery included(additional e-sensor collars available Opening size: 7-Inch by 9-Inch The E-Cat Door was designed with your Perfect Pet’s safety and sense of adventure in mind. Our E-Sensor Collar allows only your pet to activate the electronic door for easy and controlled access. And the Selective Entry feature keeps unwanted animals out! Additional collars are available for multiple pet households and can be purchased separately.