# United States tariff line 8543.20.00.00: Signal generators

> In the United States tariff, line 8543.20.00.00 covers signal generators. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8543.20 in heading 85.43 (chapter 85).

Source: https://border.bot/countries/united-states/hs-codes/8543200000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 85](https://border.bot/countries/united-states/hs-codes/85) / [8543.20](https://border.bot/countries/united-states/hs-codes/854320) / [8543.20.00.00](https://border.bot/countries/united-states/hs-codes/8543200000)

## Key facts

- Tariff line: 8543.20.00.00
- Covers: Signal generators
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [8543.20](https://border.bot/hs-codes/854320)

## What this line covers

In the United States tariff, line 8543.20.00.00 covers signal generators.

Its legal text is “Signal generators”.

## How it is structured

It falls under HS subheading 8543.20 in heading 85.43 (chapter 85). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles
- Heading 85.43: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof
- Line 8543.20.00.00: Signal generators

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 8543.20 yet.

- [The Harmonized System text for 8543.20](https://border.bot/hs-codes/854320)

- Previous line: [8543.10.00.00](https://border.bot/countries/united-states/hs-codes/8543100000) Particle accelerators
- Next line: [8543.30.20.00](https://border.bot/countries/united-states/hs-codes/8543302000) Of a kind used solely or principally for the manufacture of printed circuits

## Frequently asked questions

### What does tariff line 8543.20.00.00 cover in the United States tariff?

In the United States tariff, line 8543.20.00.00 covers signal generators.

### What is the general (MFN) duty on 8543.20.00.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/8543200000.json