How many cats can be programmed into the PetSafe Microchip Cat Flap?
The microchip cat flap can store up to 40 microchipped cats. To add more than one cat, repeat the Learn Mode process starting from step 3 for each additional cat. Replace the battery cover when the process is complete for all cats. (Page 3)
From the official Petsafe Ppa44 16427 Microchip Cat Flap manual, page 3
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