1.1 and Zone 2 dangerous places; 
 II A, II B, the IIC class of explosive gas atmospheres; 
 3 temperature groups: T1 ~ T6 
 Shell with aluminum die-casting molding, surface high pressure electrostatic spray; 
 5 built-in explosion-proof micro-switch, compact structure, small body, on and off the strong performance; 
 6. Contact Weight: a normally open one normally closed; 
 Protection class IP54 IP65