Smart cat flap with chip reader and app control.Buy cat flap + hub if you don't have a hub. If you already have a hub, you can buy an extra cat flap. The cat flap can also be used without a hub but cannot be controlled via the app.Receive notifications on your mobile phone when your cat comes home or goes out.Monitor how often and for how long your cat is inside or outside.Remotely set schedules for which cats (identified via chip) are allowed inside.Keep unknown cats out.Works with all common chip tags in the Nordic countries.ID badge available for cats without chip tags.Share access with your friends.Free app available for iPhone & Android. You can also control the cat flap via your computer at www.surepetcare.io.Requires 4xC batteries (not included).When installing in new door with metal plate, a mounting adapter is required to prevent interference with chip reading. Maximum door depth: 70 mm. For thicker door/wall you need to purchase a tunnel extender. The tunnel extender adds 5