... ALF5050-Dxx ceiling lamp dedicated LED panel , using the world's top light efficiency LED, Waterproof, low temperature rise, long ... .No mercury, No radiation, no stroboscopic light3.Waterproof design, waterproof grade IP674.Instant start-up, Can frequently closed ... white6000-6500K,Neutral whit4200-4700K; warm white3000-3500KMechanical Specifications:LED panel thickness: 3.5mmTemperature: -20°C ~ 50° ...