The 254nm UVC light can penetrate the cell walls of microorganisms and damage their DNA, effectively inactivating 99% of bacteria, allergens and viruses on the air and surfaces of air systems. The dual-frequency ultraviolet lamp, the dual-frequency ultraviolet lamp and the lifetime activated carbon catalyst can oxidize odors and volatile organic compounds. The unique UVC lamp tube combines two types of glass, which emit specific wavelengths of ultraviolet light (90% sterilization and 10% oxidation) in a single ultraviolet lamp, having the ability to control odors and VOCs as well as the advantages of sterilizing light in neutralizing mold and bacteria. Optional interfaces for operation, fault, and BA communication can be selected to achieve remote monitoring of the building, facilitating users' maintenance and care of the equipment.