... 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 ... weight is light(alumimum, 6.5Kgs only)7. With precise test data and competitive price.8. Only 15 ... Light Tester and ENERGY SAVING LAMP tester with long life