... EMC Testing System, Heater and Lumens & Color Temperature Test Instrument. For EMC Testing System, to check photoelectric properties of the ... to be put in 80°Heater for 7days) . For Integrating Sphere and Illumination Test Equipment, to test the lumen, color temperature, watts ... instability because of no using of ballast3, Special design for heat sinking, ensuring safe working temperature and long life4 ...