1. For the dangerous sites with explosive air mixture:
1 division、2 division;
2. Flammable gas, steam class：ⅡA、ⅡB4;
3. Temperatures classification：T1~T4;
4. Indoor and outdoor（IP54）.
1. Diecasted of Al-alloy shell with plastic-sprayed
surface;
2. Apply to AC 50Hz, 220V circuit as switch of lighting
electric
appliance or signal electric appliance;
3. Steelpipe and cable wiring.
