... identify or compare the quality of LED lamps,fluorescent lamps, halogent or incandescent lamps,or appliances from AC 100 to 277V ... , E14, B15, B22, GU10, G9.Could test different lamps with different bases. LED Spectroradiometers Features:1. Input voltage: ... designed according to request.Applications1. Luminous flux measurements on lamps for production and quality control, research, and development.2 ...