Material : Zinc Alloy
User Capacity : 90
Admin : 10
Normal User : 60
Temporary User : 20
Temperature : -20OC to 55OC
Power input : 4 x AA alkaline Battery
Backup unlock mechanism : 9V battery, Mechanical key
iOS OS Requirement : 7.0 and above
Android OS Requirement : Android 4.3 and Above
Bluetooth Requirement : Bluetooth 4.0