... , 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 light 15 minutes out of Spectroradiometer, and then put the ... 15 minutes needed for your checking products quality.Product LED Lamp Tester, LED Light Tester and ENERGY SAVING LAMP tester with high quality