Newnagy has developed a new kind of UV sensor. Compared with the existing products, this UV sensor has the advantages of quick response(<1s), high selectivity(no Interference of visible light, and response to only the 180nm-365nm ultraviolet), high on/off ratio(the ratio of photocurrent and dark current is larger than 100), no environmental pollution etc. It has wide range of applications such as UV flame monitoring, high voltage transmission, corona detection and so on.