The SureFlap Microchip Pet Door only opens for your petu2019s veterinary implanted microchip or RFID collar tag to keep intruder animals out so that your pet can feel safe and secure in their own home. If an intruder animal enters your home, it can cause a lot of stress to your pet and lead to fights or indoor spray marking. The SureFlap Microchip Pet Door is compatible with all common microchip types. It can store up to 32 pets and it is selective entry, preventing intruders while any cat can leave. The pet door can be installed in doors, windows or walls and it is battery-powered, meaning it can be installed virtually anywhere. A pet door mounting adaptor is required for glass installations and a mounting adaptor and one or more tunnel extenders may be required for wall installations. Unique RFID collar tags are available for non-microchipped pets and one collar tag is included with the product.nSold by Trusted Online Veterinary Retailer.