The shell is made of high quality galvanised steel plate. Stable structure for anti-aging and anti-spontaneous combustion. High intensity ultraviolent lamp is used for sterilisation with high sterilisation efficiency and long service life. Photocatalyst can effectively remove formaldehyde, benzene, TVOC and other organic gases. Equipped with manual and reservation mode to meet users needs. Equipped with a magnetic remote control that can be attached to the surface of a fuselage or metal object. Work time accumulation function, cleaning and maintenance automatic reminder function. Can be ceiling mounted, wall mounted or mobile installation. Automatic fault alarm function.