Secure storage and quick access. Cleaning in large companies is usually entrusted to professional firms that have multiple employees responsible for daily tasks. These employees, in turn, have other clients, which means that the personnel in a company changes several times a week. To avoid losses and confusion, it is advisable to manage and provide the keys to the rooms with cleaning supplies and accessories centrally. This way, any employee on duty can access them—preferably even after office hours. The Rieffel Key Depot KSB-S is designed for the storage of keys for authorized personnel. With frequently changing groups of people such as craftsmen, cleaning staff, or holiday guests, assigning and sharing a code makes the allocation easier.