Programmable infra-red remote control door unlocks and allows access to your pet ONLY. Each door comes with a color-coded key your pet wears and each color holds the infra-red combination to unlock only the door. Features of the versatile 4-way locking system: locked, in-only, out-only and unlocked, plus a magnetic assisted, weatherproof, see-through rigid flap. Easy-to-install, universal fitting for windows, walls and doors. Comes with additional closeout barrier panel for added security. Operates on (4) AA batteries (not included).

Replacement/Extra Collar Key - When ordering replacement/extra keys, you must specify the same infra-red color as the kit you've originally ordered.