The supply explosion-proof electrical explosion-proof lamps, Shanghai amount of giant series of explosion-proof limit switch, the supply explosion-proof electrical explosion-proof lamps, Shanghai amount of giant series of explosion-proof limit switch, the supply explosion-proof electrical explosion-proof lamps, Shanghai amount of giant series of explosion-proof limit switch, LXK-Series explosion-proof limit switch Scope 1.1 District, Zone 2 hazardous gas spaces; Ⅱ A, Ⅱ B class T1 ~ T6 group explosive gas or vapor environment; 3 explosive dust environment: 20 District, Zone 21 and 22, temperature class: TB, T6 ; 4. indoor, outdoor (IP54) Features 1. Aluminum alloy die molding, spray the surface; 2. pipe or cable wiring.