The Yale combination key access box is designed to store keys safely on the outside of a property. It has a resettable, mechanical 4-wheel combination lock and holds up to 3 Yale type keys. It's ideal for use by care workers, cleaners, workmen or children. There's no longer any need to put keys under the mat for when the children come home. It has a strong die-cast body and a weather resistant case. It has concealed fixings for maximum security.