You can allow all your cats the use of the magnetic door or replace the current magnetic collar key of your cat. This spare collar with magnetic key is compatible with the magnetic Staywell® cat doors (series 400 and 900).

FeaturesCompatible with:

Staywell® Deluxe, magnetic, four-door cat door Closing positions (400 series)
Classic, magnetic Staywell® cat door with four locking positions (900 series)