1. 爆炸性气体环境危险场所:1区、2区;
2. 可燃性气体、蒸气级别:ⅱa、ⅱb、ⅱc;
3. 温度组别:t1~t5;
4. 户内、户外 (ip54)。
1. for the dangerous sites with explosive air mixture:
1 division、2 division;
2. flammable gas, steam class:ⅱa、ⅱb、ⅱc;
3. temperatures classification:t1~t5;
4. indoor and outdoor(ip54).