The principle of ultraviolet sterilization is to directly destroy the DNA or RNA genetic material of microorganisms (bacteria, viruses, pathogens) by using high-energy deep ultraviolet photons in the UVC band of about 278-280nm, and to achieve efficient and rapid broad-spectrum sterilization effect by blocking their reproduction. People can't see it, so it is also called "invisible light sterilization". In contrast, ultraviolet rays in other bands are not a problem for daily sterilization, but I'm afraid it will take ... seconds to kill the cunning and tenacious COVID-19. The effect is quite good, but you should pay attention to it during use.
Ultraviolet rays can burn people's skin and eyes. Don't let ultraviolet rays directly or indirectly irradiate bare skin during use, and don't look directly! !
Flammable and explosive places should not use ultraviolet disinfection! !