1. For the dangerous sites with explosive air mixture: 1 pision、2 pision; 2. Flammable gas, steam class：ⅡA、ⅡB、ⅡC; 3. Temperatures classification：T1~T6; 4. Indoor and outdoor(IP65).
1. The increased safety is mounted the flame-proofing elements inside; 2. The pressing shell made of fiberous glass, reinforced unsatur ated polyster resin has elegant outlooking and good properties for corrosion-proof, static electrity、resistance、impact resistance and reliable-heating; 3. The flame-proofing switch with tight structure, good reliable and small bulk has strong capacity for cutting out and in, and the long service life, etc; 4. All the fastening pieces are adopted the stainless steel screw; 5. Cable wiring.
