1. Access by fingerprint,password or RFID access card,easy to take and return keys. 2. Authorization management and automatically generate records of pick up,reduce the risk and manangement costs,improve work efficiency. 3. PMMA glass or steel stainless door to make keys safer. 4. Keys are under control via hardware and software,operate easily with LCD. 5. Integrated with most access control system. 6. Adopt multi-nodes independent CPU and Flash,design-based bus architecture,nice appearance and use less space.