Your small dog or cat wears a small magnet that doubles as an identification tag. The door senses the collar key (magnet), and unlocks. The pet then pushes through. The sensitive, fast reacting circuit in the flap guarantees instant entry for selected pets, even when approaching the flap quickly.
These electronic pet doors are operated by one 9 volt battery (not included) so they don't require a location near a wall outlet. A single PP3 (9v) battery will typically give at least 9 months operation. Includes 2 magnets for 2 collars.
Electronic pet door features:
Pet Door Size Recommendations
(9volt battery is not included.)