It is a pre-manufactured, easy-to-install, and removable product that can be easily installed and removed by installing a filter on a high-density stainless filter and a nozzle to eliminate nozzle clogging. It is possible to prevent winter freezing by installing a heating wire and a water removal valve, and it is equipped with a metering pump so that disinfectant can be diluted and sprayed automatically when spraying. Functional photo sensors and roof sensor detection methods can be applied, and fan-shaped and circular spraying methods can be used depending on the type of nozzle.