... 2.high energy-saving 3.high safety and long life square led downlight :LED ( Light Emitting Diode ) is a semiconductor light emitting device, ... color can choose white or colored light, red, yellow, blue, green, yellow, orange and green.4.high safety ,LED light source ... 50HZ stroboscopic, no ultraviolet B radiation, the color temperature of white color temperature 5500K 5000K, closest to the sun. We ...