Features: UVC can effectively kills a variety of common pathogenic microorganisms such as bacteria, fungi. This portable UV sterilizer is a sterilization device based on UV technology. Super intensity ultraviolet sterilization: UVC 254nm radiation kills all bacteria, fungi and other microorganisms. This ultraviolet sterilizer can be used for purifiers, refrigerators, sterilizers, ovens, tooth-cleaners, etc. The bulb is able to fit a 220V, 50Hz circuit with a capacitor. Electronic ballast is not needed. DC constant current power supply.