Light sources1. D65 International Standard Artificial Daylight│Colour temperature: 6500K│Wattage: 2 x 18W2. TL84 European, Japanese light source│Colour temperature: 4000K│Wattage: 2 pieces x 18W3. Cool light source for US shops│Colour temperature: 4200K│Wattage: 2 pieces x 20W4. Sunset lamp, yellow light and colour comparison reference│Color temperature: 2700K│Wattage: 4 pieces x 40W5. UV lamp│Fluorescent│Power: 1 piece x 20W Control methodHigh frequency electronic start, saving waiting time. Timer5 sets, recording the time the light is used. It is normal for the lamp to burn very strongly when switched on and off frequently. It is recommended to replace the lamp after 1000 hours of use.