UV 254 nm Light Bulb 15W UVC Ultraviolet lamp E26/E27 Base Same day shipping from New York Effectively kills viruses and bacteria Convenient! The lamps work in any regular screw-in socket. No special connections required. US Standard - 110V "OZONE FREE" Option The "OZONE FREE" lamp will produce only a minor amount of ozone. At such low concentration, ozone will not cause any harm to the human body. During the operation of the UVC lamp, there will have a very weak distinctive smell in the room. This particular smell comes from organic materials such as bacteria and mites that are burned by ultraviolet light. In general, this smell will disappear quickly. If you don't like this smell, you can wait 30-60 minutes. Warning: When using this lamp, don’t look directly at the working bulb. Prolonged exposure to UV rays can burn human and animal skin and damage eyes. Avoid touching the lamp tube, it might reduce the lifespan of the lamp. People/pet/plant can’t be exposed to the UVC light and must leave the room when the lamp works. This unit should not be used for illumination purposes. It is intended for professional use in existing Ultraviolet or Germicidal Systems only. Exposure to Ultraviolet light can result in serious damage including painful eye and skin irritations.