4 switch modesOnly switch out, only in and out, fully locked, easy to control pets in and out; Simple and Good DesignThe transparent flip cover allows pets to see through the door. The outer screen is for waterproofing. Brush bars reduce energy loss and silent action, ensuring pets and owners are not disturbed Easy to InstallComplete instructions are included, allowing you to easily install on windows, doors, cabinets, and more. [Cat Door] A great solution for letting your cat into any indoor room while giving you full control; it's perfect for entering bedrooms, or even food or litter boxes, closes behind the door to keep dogs and children out. Four independent modes, you can easily control the pet in and out by the switch rotation out, only in, in and out, full lock Transparent flap allows pets to see through the door. The outer screen is for waterproofing. Brush strips reduce noise when closing the door. Outer size: 20x19.2x5cm Inner size: 26x15cm