. . 1.1区、2区危险场所。 2.ⅡA、ⅡB、ⅡC类爆炸性气体环境。 3..有控温要求的车间、控制室、实验室等场所调节温度.要求ⅡC 类请注明 . 1. Can be used in zone 1 and zone 2 dangerous places. 2. Can be used in ⅡA、ⅡB、ⅡC group explosive atmosphere. 3. Applicable in workshop, control room, lab room where need temperature control. * Please note if want ⅡC group. 
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