... parameters: voltage, wattage, color temperature, luminous flux, luminous efficiency3. With different base: E27, E14, B15, B22, GU10, G9, ... It could test different lamps with different bases.4. Test steps: Keep the tested lamps ... time is only about 10 seconds.6. The size of Spectroradiometer is very tiny(diameter of globe is ... Light Tester and ENERGY SAVING LAMP tester with high quality