PetSafe Four Way Cat Flap Door Travel Waterproof collar with a battery

Waterproof collar with a battery life: approx

Receiver charger

or any other combination

Here's how it works: Put the collar on the dog (collar is adjustable from 7" to 27")

PetSafe Four Way Cat Flap Door Travel Waterproof collar with a batteryGive your cat access to her litter box even with a closed door. This durable, transparent cat flap fits any interior door that is 1' to 2' (2. 5 cm 5 cm) thick. The 4 way locking system gives you ultimate control of the kind of access you want your cat to have. Features: High impact polypropylene frame. Can be fully open. Can be fully locked. Cat can get out but not in. Cat can get in but not out. For pets up to 12 lbs (5. 4 kg). Features: Flap