Supply explosion-proof electrical explosion-proof lamps, Shanghai amount of giant explosion-proof control button, the supply explosion-proof electrical explosion-proof lamps, Shanghai amount of giant explosion-proof control button, the supply explosion-proof electrical, explosion-proof lamps, Shanghai amount of giant explosion-proof control button LA53-series explosion-proof control button (Ⅱ B The) Scope 1.1 Zone 2 hazardous gas areas; 2. II A and II B class T1 to T6 group explosive gas or vapor environment; 3 indoor, outdoor (IP55) Features 1. Aluminum alloy die-casting, surface spray ; built flameproof button and the increased safety ammeter; 3 button with ammeter to monitor the running status of the device; 4. pipe or cable wiring.