Adopting the Korean 1099 scheme, coupled with IR-CUT day night switching, the output image is naturally clear during the day and transparent at night with low noise. The control circuit adopts a constant current and constant voltage design, with a built-in lightning protection module. The video lightning protection effect has a voltage wave of 10/700US 4KV (response speed less than 50PS), and the power lightning protection effect has a combined wave of 1.2/50US&8/20US 4KV-2KA (response speed less than 50PS).This product is suitable for roads, shopping malls, banks, public places, finance, hotels, office buildings, residential areas, etc.