The Barska Combination Key Lock Box with Door Hanger and Wall Mount is a versatile and heavy-duty security solution for storing keys outside or in public spaces. Whether you hang the combination key lock box around a door handle or mount it to a wall, the protective rubber and foam surfaces covering the shackle and back side will ensure that it will not damage the surface of what it's attached to. The 4-digit code can be customized and reset, ensuring that only authorized users with the current code can open the lock box. The shutter provides enhanced weather protection and potential dirt and debris resistance for the combination dial. Keep your keys safe, secure and easily accessible during emergencies with this key lock box.