Protect File Privacy: Invisible concealed lock, installed inside the cabinet and unlocked with Bluetooth APP directly. It is used for office drawer cabinets to protect important documents and personal belongings; when the documents are chased or the key is lost, the lock can be unlocked remotely through the mobile phone, which is safe and convenient. APP remote authorization key: if you don't are not in the company on a business trip or on vacation, colleagues urgently need documents in the drawer, you can remotely authorize the key via APP, set the authorization period, you can also check the unlock record, and withdraw the right to use the key at any time. Display unlock records in real time: View all unlock records on your mobile phone in real time, and track the using smart cabinet lock switches. In addition to authorization operation through the app, batch authorization in the background or delete others, generate QR code scan code authorization, query detailed unlock records, etc. . Auto-lock: Set the auto-lock function on the app, and the lock will automatically deploy after unlocking; when the auto-lock function is disabled, the bolt will not automatically extend after unlocking. If you need to use the drawer frequently for a certain period of time, you can turn off the auto-lock function for easy document retrieval and retrieval Powered by: 2 x AAA batteries (not included) for storage power supply, ultra-low power consumption design and automatic snooze function when battery is low. Open the lock, the remaining battery status will be displayed. Can be set to open automatically when battery is low to avoid unavailability of important files