What are 2-way locking and 4-way locking pet doors?
A. A 2-way lock allows the user to set the flap in two different positions – either “Locked” or “Unlocked”. A 4-way lock gives more control of your pets’ movements as it also allows the user to set the flap to “In Only” and “Out Only” – which are very useful if you want to keep your pet outside or lock him in at night.