HTS code 8543.70.60.00 covers "Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof › Other machines and apparatus › Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.