8531.80.90.31 - Horns

This HTS classification, 8531.80.90.31, specifically covers "Horns." These are sound-producing devices designed to emit a distinct audible signal, typically for warning or signaling purposes. While many signaling apparatus fall under heading 8531, this particular subheading isolates devices whose primary function is the generation of a horn-like sound. Examples include automotive horns, air horns used on vehicles or boats, and industrial signaling horns.

This category is distinct from its sibling "Other sound signaling apparatus" (8531.80.90.41) which would encompass a broader range of audible alarms and signals that do not specifically emulate the sound of a horn. It also differs from "Indicator panels" (8531.80.90.00), which are designed for visual signaling rather than audible alarms. The scope here is strictly limited to devices producing a horn sound.

As this is a leaf node in the HTS structure, there are no further subdivisions. Therefore, classification under 8531.80.90.31 is final for goods meeting the description of horns. Classification decisions will hinge on the physical characteristics and intended function of the device, confirming its primary purpose is to produce an audible horn sound for signaling or warning.