The Philips NaturalTrust UVC LED Modules are designed to disinfect ambient water (sealed nut & snap version), cold water (sealed nut version with cable) and air & surface (non-sealed version with cable). The UVC LED module emits UVC radiation which deactivates micro-organisms such as bacteria, moulds and viruses to prevent them from growing in the water or on the surface that is irradiated. This way it reduces the presence of unpleasant odors caused by germs accumulating in or on your device, therefore requiring less maintenance. Because of its small size, it fits appliances where conventional mercury discharge lamps cannot be integrated, such as refrigerators, coffee machines, air humidifiers, ice makers etc. It is operating on low voltage DC below 24V so there are no issues with electrical safety in water appliances. In cold conditions such as cold water reservoirs or refrigerators, there is no UVC output drop like with conventional mercury discharge lamps.