... Voltage ,Current,and Annual power consumption;lumen and color temperature ect for the led lamp. Lumen and color temperature(CCT) tester ... Spectrophotocolorimeter.Spectroradiometer Measures:1. It's practical tester to identify or compare the quality of LED ... parameters: Color temperature (CCT), Lumen, Luminous, efficiency. Voltage, Wattage, Current,Power factor,, Annual power consumption(calculated by ...