... luminous efficiency, lux, cct ,Voltage, Current, Power, Power Factor and Annual power consumption (calculated by 10hrs/day ) of lighting products. All those ... professional to identify the good or bad quality of lighting products, With different adaptor(E14 B15 B22 E27 GU10 G9 E40 ... G4):2. Testing Power,Power factor, Voltage ,LUX ,color temperature and Annual power consumption.It could test 2 ...