1. Aluminum-casting alloy shell molding formation, compact structure,pleasant appearance, plastic blasting in surface 2. The lampshade is made of toughened glass; 3. Dual-fuction light of lighting and emergency 4. Emergency power is non-maintenance nickel-cadmium battery under the normal power-supplying condition, the emergent lamp will turn on when the power lose because of accident or power faiulre. 5. Steelpipe and cable wiring; 6. Suitable for GB3836-2000、 IEC60079、GB12476.1-2000、IEC61241 standard request.