Basic series (B) is based on simplicity and safety. The KeyBox is equipped with a keypad for entering codes and programming. The key cabinet has a red diode that indicates that the key cabinet is active, which blinks more frequently when in Service mode. The key cabinet is available in different models with 16, 29 or 216 key hooks or, alternatively, with 6 smaller compartments. Up to 15 expansion key cabinets can be added on in any combination, which means that you can have up to 96 compartments in the key management system, all managed by the same keypad.