The color temperature is a measure to indicate the respective color impression of a light source. The unit of color temperature is Kelvin (K). Color temperatures can be divided into different light colors, namely warm white below 3300 K, neutral white 3300-5000 K, daylight white above 5000 K. Depending on the application, different color temperatures or light colors are recommended. Warm white light is suitable for living areas, while working light is usually in the daylight white range.