Petsafe Compatible / Staywell Replacement, Magnetic Collar Key, 2 Pack, Selective Input, Convenient, Microchip Alternative, 400 & 900 Series

LIGHTWEIGHT AND COMFORTABLE - Magnetic collar keys are compatible with most cat collars. 10mm and only 5g HOUSES FOR MULTIPLE PETS - Ideal for multi-cat households, the magnetic cat flap ensures only your cats enter SELECTIVE ENTRY - Keeps out stray and unwanted animals, compatible with Staywell magnetic keys to ensure your magnetic cat flap unlocks for your cat every time Independence - With the magnetic cat flap that only opens for your pets, the keychain gives your cats the freedom and independence to come and go as they want without constant supervision of their owner CAT PROOF - The sturdy and durable design of the magnetic keychain can withstand even the most active cats as the lightweight, water-resistant design makes it virtually cat proof COMPATIBILITY - PetSafe compatible magnetic keys are compatible with the 400 and 900 series 4-way locking magnetic flaps