1. It is widely used in flammable and explosive gas environment, such as oil extraction, oil refining, chemical industry, offshore oil platform, oil tanker and other flammable dusty places such as military industry, port, grain storage and metal processing.

2.  Suitable for explosive gas environment zone 1, zone 2;

3. Explosive atmosphere: class ⅡA,ⅡB, ⅡC;

4. Suitable for combustible dust environment in the area 22, 21;

5. Suitable for high protection requirements, damp places.