Method of supplying power: Open the cover of battery cabinet and install four new R6 (size AA) batteries. Or use 9 V to 3.5 V DC adaptor. After connecting with power, the device instantly starts work. The device is completely close and with nanotechnological and photocatalitic disposal inside. It realizes triple recycle sterilization with super ultraviolet light, ozone and photocatalyst. Work of the device is controlled by microcomputer. When the door of this device is closed, it starts emitting ultraviolet light and ozone 3 - 5 minutes and then the emitting will automatically stop. Except the door is opened again, otherwise, every other 4 ~ 6 hours the device again starts emitting ultraviolet light and ozone and 3 - 5 minutes the emitting will automatically stop. Such way it realizes tripe sterilization. When the device normally works, the indicator in top of front cover slowly flashes. If indicator always illuminates with supplying of dry batteries, it means that batteries is lack of power volume. Replace the batteries. Detachable toothbrush shelf brackets is capable of storing five toothbrushes or four toothbrushes and one shaver. Detachable toothpaste holder is capable of storing one toothpaste.