All explosion-proof lights have very strict requirements for what must be shown on the nameplate. Once a lamp receives its certification from the notified body, its production and use are strictly controlled.

Here are the key things you should check:

1. It Must Have a Clear Ex Marking

For example: Ex II 2 G Ex db IIC T6 Gb

• Ex — Means it complies with ATEX directives.
• II — For explosive atmospheres other than mines (like chemical plants, refineries, etc.).
• 2 — High level of protection, suitable for Zone 1 (gas) or Zone 21 (dust) — areas where explosive atmospheres may appear.
• G — For explosive gas environments.
• db — Flameproof enclosure (Ex d), the housing can withstand an internal explosion without transmitting it to the outside.
• IIC — Suitable for the most dangerous gases (like hydrogen, acetylene). It also covers IIB and IIA gases.
• T6 — Maximum surface temperature ≤ 85°C (when ambient temperature is 55°C). It also covers T5, T4, T3, and T2.

2. The Certificate Number Must Be Engraved on the Nameplate

Genuine certified lights always show the official certificate number.

3. There Should Be a Unique Manufacturer Serial Code

This allows traceability later if any issues arise.

4. Manufacturer's Name, Address, and Contact Phone Number Must Be Clearly Marked