... (10.150.200CM avalible).Diameter of opening hole: 10cm 4.Testing lamps: energy saving lamps , tubes , LED lamps , ... halogen lamps ect . 5.Funtion: testing Power , Power factor, Voltage ,Current,and Annual power consumption(calculated ... sphere is 6.5Kgs only, Different size and requirements can be customized Testing parameters: Color temperature, Lumen, Luminous, efficiency. Voltage ...