I have read plenty of mixed reviews about this product online, which almost stopped me from making the purchase. But surprise, surprise–it’s the first best electronic cat door on my list!
This electronic cat door is PetSafe SmartKey activated. It can accommodate up to 5 SmartKeys that are waterproof, in case you have more than one kitty cat (but the additional ones are sold separately). I simply attached the SmartKey to my cat’s existing collar like a pendant, which she didn’t seem to mind.