1.Mechanical key for backup 2.Fingerprint guarantees high security 3.Invalid password /fingerprint alarm 4.Suit for small space ,such as desks 5.Powder coated interior and exterior, in various colors 6.Support network function ,software manage. 7.Use alkaline battery Basic Parameter Volume :230mm*418mm*350mm Weight :19Kg Color : White, Black, Grey Working Temperature: -20C to +60C Working Humidity :10% to 98%RH Input Voltage :DC6V Static Current :< 50mA FAR :< 0.0001%