The Cat Mate Elite Super Selective Cat Flap comes with two unique electronic I.D. tags, suitable for use with up to eight I.D. tags, controlling access through the flap to keep out unwanted animals. The LCD display shows the selected access and the status of the entrance, the location, and the time since the last flap activation for up to three selected cats. It features a low battery status indicator and requires four AA (R6) batteries (not included). The timer function controls access for all your cats, such as setting a curfew at night. It has a self-adjusting feature for installation thicknesses of up to 50 mm, making it ideal for single or double glazing and all panels up to 50 mm thick. A tunnel is available for wall installation, and the flap includes a fully airtight, weatherproof brush seal.