# II 2D — Certification marks and hazardous-area classifications: cross-market equivalences

For II 2D, market / system is ATEX; stated equivalent is Db; applies to is Zone 21 & 22, verified against its source on 2026-08-11.

- **Designation:** II 2D _(verified: appears in the quote below)_
- **Market / system:** ATEX _(verified: appears in the quote below)_
- **Stated equivalent:** Db _(verified: appears in the quote below)_
- **Applies to:** Zone 21 & 22 _(verified: appears in the quote below)_

## What the source says

> Suitable for Zone 21 & 22 ATEX Group & Category: II 2D Temperature Class (T Class) IECEx Equipment Protec on Level: Db

## Source

- https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Certification marks and hazardous-area classifications: cross-market equivalences](https://referencesource.org/certification-standards-equivalence/).