Ra value is determined by comparing the 8 test colors defined in DIN6169 standard under the standard light source and the tested light source. The smaller the color difference is, the better the color rendering of the measured light source is. The light source with Ra value of 100 indicates that the color displayed under LED light is consistent with that under the standard light source, AC(alternating current), Emitted by the generator in the direction of the alternating current, security lighting, to ensure the safety of the people in the process of in potential danger and provide that part of emergency lighting, LED bulb, the incandescent light generated by the current element of the light source (often called cape bubble or GLS lamp), saturation, judge the single color as a proportion of the overall feeling of visual properties.

Common-Cathode CC 3201AS 7-Segment digit 3201AS LED Common-Anode CA 3201BS Display 3201BS 0.30 inch
Common-Cathode CC 3021AS 7-Segment digit 3021AS LED Common-Anode CA 3021BS Display 3021BS 0.30 inch

The light source with Ra 100 value
The standby LED lighting of emergency
LED light source index and average life
LED incandescent lamp color response
Color performance of LED light source
Color temperature LED source irradiation
Change the brightness of the LED
LED chips provide control voltage interface
In the RGB LED system
LED supply voltage and load voltage