Materials and characteristics: High pressure die-casting aluminum housing. Toughened glass.shock resistance and high light transmittance. High purity aluminium eflector, symmetric light distribution. The base and framesealed by heatproof silicon gasket,aviod of rainwater and dust. Intergrated device, easy installation.Applicable place: Inside and outside of the stations, docks, squares, gymnasuims,signboards and billboards.etc.