---
title: United States
iso: US
mark: UL / ETL + FCC
obligation: Market access
region: North America
source_url: "https://www.fcc.gov/engineering-technology/laboratory-division/general/equipment-authorization"
verified_at: 2026-08-19
version: 1
canonical: "https://tsinghu.com/en/markets/us"
publisher: Shenzhen Tsinghu Technology Co., Ltd. (agency, not a certification body)
license: CC-BY-4.0
---

# United States · UL / ETL + FCC

| | |
|---|---|
| Obligation | Market access |
| Scheme | NRTL certification plus FCC authorisation or self-declaration |
| CB conversion | 不接受 CB 直接转证 |
| Typical lead time | 6–14 周 |
| Local requirements | Some states and fire authorities require UL 9540A test data |

## Related regulations and standards

- [UL 1973:2022](https://tsinghu.com/en/regulations/ul-1973)
- [UL 2743:2025](https://tsinghu.com/en/regulations/ul-2743)
- [UL 9540:2023](https://tsinghu.com/en/regulations/ul-9540)