Do you want the flexibility to choose which cats are allowed outside and track your outdoor cats’ comings and goings remotely? Do you want to be able to lock the cat flap while you’re away from home or check that your cats are coming and going as normal while you’re on holiday? Well now you can, with the world’s most advanced cat flap… ever. Once linked with the Sure Petcare app you will be able to do all of this and more from your phone. So that whether you're at home or away you can relax in the knowledge that your cats have the security they deserve. Sureflap Hub sold separately. Just like giving your cat their own house key, this flap door is smart enough to know who’s allowed in and who’s not. It works by picking up on your cat’s unique microchip or collar tag, and only opens to let your kitty in, while staying closed for all other animals. Simply program in your cat’s microchip with just one button―you can store up to 32 cats in the system―and install on any door, window or wall. It has no cumbersome cables, and features a manual 4-way lock that lets you control when your cat comes and goes, even a setting to keep him inside at night. The system is compatible with all microchips and RFID collar tags. Suitable for small cats, for medium/large cats we recommend SureFlap Microchip Pet Door Connect Key Benefits: Connect with the Sureflap Hub (sold separately) which links the Microchip Cat Door Connect to the Sure Petcare app Know whether your pets are at home, monitor long-term activity and notice changes in behaviour Prevents intruder animals entering your home Share app access with friends and manage their permissions Battery powered with up to 6 months battery life (4 x AA batteries not included) Remotely lock or unlock the cat door anytime, anywhere from the Sure Petcare app Receive notifications when your pet enters and leaves your home Create a curfew - set the door to lock and unlock at specified times or take control at any time using the Sure Petcare app Set exit permissions for each pet to keep specific pets indoors using DualScan™ technology SureFlap Cat Door Mounting Adapator required to fit into glass - sold separately What's Included:Main Flap Assembly, Battery Compartment, Memory Button, Indicator Lamp, Catch, 4-way Manual Lock, External Frame, Battery Cover, Selection of Screws, Screw Caps, Draught Excluder. Size Guide: Flap opening dimensions 142mm (W) x 120mm (H) Door/wall mounting dimensions 165mm (W) x 171mm (H) Size of the exterior cat door frame. 210mm (W) x 210mm (H) Tunnel depth 70mm (D) Glass mounting dimensions. A circular hole is required to install the pet door in glass. The optimum hole size is 212mm, but the pet door can be installed into holes up to 260mm in diameter.