The shell is made of alloy environmental protection materials with high strength and good toughness. The transparent parts are reinforced tempered glass, which is dust-proof, waterproof, corrosion-resistant and rust proof. It has strong resistance to strong impact and impact; Multi channel shockproof structure and high-tech surface spraying treatment, all kinds of short-range high-strength and high-frequency vibration can not affect the lamps, and can work stably in the workshop, subgrade, rail and other high-frequency vibration and humid, high-temperature environment for a long time. Good electromagnetic compatibility will not cause interference to the transmission network.