... alkaline batteries12.Eergence Power Suppy: DC6V13.Ope13.ating temperature : -10°C~ 50°C14.Operatng humidity : <90%RH15.Size: Inside: 280×70 ... ×25mm (L*W*H)Outside: 280×70×17mm (L*W*H)Function ·Easy installation, easy to ... it does not catch clothing)·One years warranty.·Application: home, office room, store, will, lab, bank, hotel fingerprint lock door lock ...