UV sensor is a very sensitive electronic sensor detector. Its appearance is similar to the conventional flame sensor R2868. R9454 using metal photoelectric effect and gas multiplication effect, suitable for the wavelength of 185nm-260nm light, the product is very easy to install and use. At the same time, Hamamatsu also to optimize product electrode, improve product durability and mechanical shock resistance, can be easily installed and used in a variety of related equipment. R9454 is widely used in oil exploration, natural gas exploration, refinery, fire alarm system and UV leak detection, discharge monitoring, UV switch, burner combustion monitoring and other industries and applications.