Item Type: Smart Password Cabinet Lock Material: Zinc Alloy Password Length: 1-12 digits Working Voltage: DC 2.3-3.3V Battery Specification: CR1225 (Built-in) Battery Capacity: 100mAh Standby Current: 2 microampere Maximum Current: 5mA Battery Life: 1-2 years (calculated based on 30 unlocks per day) Installation Hole Diameter: Approx. 16-20mm/0.6-0.8in Board Thickness Requirements: Steel: Approx. 0.5-12mm/0.02-0.5in Wood: Approx. 0.5-22mm/0.02-0.9in Working Temperature: -20-70 Relative Humidity: 20%-80% Package List 1 x Password Cabinet Lock 1 x Mounting Accessory Pack 1 x Manual 1Made of zinc alloy, strong and durable, use password to unlock, up to 12 digits can be set as your password. 2When the battery is low, a low battery prompt will be displayed. At this time, the lock can be unlocked about 500 times. Please replace the battery as soon as possible. 3If you enter the wrong password three times in a row, the password lock will alarm for 60 seconds, and you can unlock it by outputting the correct password. 4It can be standby for a long time, and the use time is 12 years (calculated based on 30 unlocking times a day). 5Wide range of applications, suitable for file cabinets, sauna cabinets, file cabinets, etc.