1. Widely used in oil extraction, oil refining, chemical industry, military and other dangerous places, as a safe exit indication, evacuation instructions for use;
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.
6. Suitable for low temperature environment above -40.