Pet Corp Magnet Upgrade**

Magnetic Upgrade Cartridge works in conjunction with the Petcorp PC5 Universal Cat Door (listed in our basic cat door section) - this is a revolutionary development in pet door design!

This cartridge enables your Petcorp PC5 Universal cat door to work on a magnetic system ensuring that stray cats stay out of your house - 4 way locking system in, out, in/out and locked. Comes with 2 magnetic collar keys which your cat wears on its collar (collar not included).

Pet owners often experience problems with stray cats after they have purchased and installed a manually operated cat door, or have multiple pets to manage. The PC5s revolutionary design allows for each doors locking mechanism to be changed via an innovative cartridge system, without the need to remove or replace the cat door!