... which provided by user. Features:1,Enclosure is made form glass reinforced polyester, with the elegant shapemment corrosion resistance ... safety enclosure ,built-in explosion protection components.3,Built-in indicator light, pushbutton, conversion switch ,ammeter ,voltmeter ,potentiometer etc. and ... ~Φ18 mm10,Compliance with :GB 3836.1,GB 3836.2,GB 3836.3,IEC60079-0,IEC60079-1,IEC60079-7 Using sortRated ...