# HS code 8543.20: Signal generators

> HS code 8543.20 covers signal generators. It sits in heading 85.43 (electrical machines and apparatus, having individual functions, not specified or included elsewhere in this Chapter) in 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). Other goods of heading 85.43 are classified under 8543.10 (particle accelerators), 8543.30 (machines and apparatus for electroplating, electrolysis or electrophoresis), 8543.40 (electronic cigarettes and similar personal electric vaporising devices), 8543.70 (other machines or apparatus) and 1 other. National tariff lines under 8543.20 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/854320
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 85](https://border.bot/hs-codes/85) / [85.43](https://border.bot/hs-codes/8543) / [8543.20](https://border.bot/hs-codes/854320)

## Key facts

- HS code: 8543.20
- Covers: Signal generators
- Heading: [85.43: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this Chapter](https://border.bot/hs-codes/8543)
- 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](https://border.bot/hs-codes/85)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/854320)

## What this code covers

HS code 8543.20 covers signal generators.

The legal text of the subheading is “Signal generators”, in HS2022.

## What it doesn’t cover

Other goods of heading 85.43 are classified under 8543.10 (particle accelerators), 8543.30 (machines and apparatus for electroplating, electrolysis or electrophoresis), 8543.40 (electronic cigarettes and similar personal electric vaporising devices), 8543.70 (other machines or apparatus) and 1 other.

- [8543.10](https://border.bot/hs-codes/854310) Particle accelerators
- [8543.30](https://border.bot/hs-codes/854330) Machines and apparatus for electroplating, electrolysis or electrophoresis
- [8543.40](https://border.bot/hs-codes/854340) Electronic cigarettes and similar personal electric vaporising devices
- [8543.70](https://border.bot/hs-codes/854370) Other machines and apparatus
- [8543.90](https://border.bot/hs-codes/854390) Parts

## How it is structured

8543.20 is a six-digit subheading. Its first two digits, 85, are the chapter; the first four, 8543, are heading 85.43; the last two, 20, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- 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
- Subheading 8543.20: Signal generators

## In other countries

National tariff lines under 8543.20 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/854320): 1 line, used by 1 other country

- Previous subheading: [8543.10](https://border.bot/hs-codes/854310) Particle accelerators
- Next subheading: [8543.30](https://border.bot/hs-codes/854330) Machines and apparatus for electroplating, electrolysis or electrophoresis

## Frequently asked questions

### What does HS code 8543.20 cover?

HS code 8543.20 covers signal generators.

### Which heading and chapter is HS code 8543.20 in?

HS code 8543.20 is in heading 85.43 (electrical machines and apparatus, having individual functions, not specified or included elsewhere in this Chapter) in 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).

### Where are goods of heading 85.43 classified when 8543.20 doesn’t fit?

Other goods of heading 85.43 are classified under 8543.10 (particle accelerators), 8543.30 (machines and apparatus for electroplating, electrolysis or electrophoresis), 8543.40 (electronic cigarettes and similar personal electric vaporising devices), 8543.70 (other machines or apparatus) and 1 other.

### Which countries’ tariffs list national lines under HS code 8543.20?

National tariff lines under 8543.20 are live on border.bot for the United States (1 line, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/854320.json