The smart locking boxes offer more control and access newspapers, so that you know exactly who has access to your property and when. Whether you are a real estate agent, a rental goods manager or just want a spare key accessible outside your home, you need a key box. Permanent or portable installation: with a wall design and on the door handle, BIntelligent keypie can easily help you. Intelligent and reliable: two types of PIN codes: Password specified by the user, random password of the system. For situations such as daily use, unique use, recurring visits, exact dates/hours of use Large internal cavity and removable key hook: the key box is designed to avoid blockages, even when you hold several keys, such as car key and house. Premium and sustainable: with a SPCC metal material, the k.