WIDE APPLICATION: Suitable for Cabinet, Drawer,Closet, Pantry, Locker, Gun Box, Storage Box etc. EASY TO INSTALL: Wiring-free design,no need any apps. PUBLIC MODE:When you set the lock as public mode,the lock will reset the passcode automatically after unlocking. LOW POWER CONSUMPTION: Standby time is up to 1 year which only using 3 AAA batteries. LOW BATTERY WARNING:The lock will alarm 6 times after unlocking when the battery is lowThe keyless design eliminates the trouble of losing keys! High security,protect your personal items from strangers,keep your privacy safety.(Burglarproof) Also can avoid your children free to open the cabinet or drawers.(Childproof) Touch keypad,One step to unlock. Wiring-free design,no need any apps,easy to install. Wide application: Suitable for Cabinet, Drawer, Closet, Locker, Pantry, Gun Box, Jewelry Box, Storage Box etc. Suitable for Home/Office/Hotel/Rental hosts(Airbnb/Booking) Two mode to unlock: Passcode & USB Key Low power consumption: Standby time is up to 1 year which only using 3 AAA batteries. Backup power supply port: When the battery runs out,you can use emergency charge port to unlock. We also provide a very detailed technical operation manual. Specification: Power supply: 3 AAA batteries (NOT inculded) Backup power supply port type: Micro USB Passcode length:1-10 digits Standby time: Up to 1 year