... Temperature Range: -40--+50degree Life: 50,000 hours Led ceiling lightModel Number:JY-THD-013Specification:20*9.5cmMaterial: Alloy+( ... for sample 35days for T/T & L/C led ceiling light advantage:1environmental protection: non-polluting, strobe, ultraviolet, infrared ... ; 6, sufficient illumination: LED starts to reach the rated luminous flux and the instantaneous no switching losses. ceiling light