Answer
Oct 28, 2025 - 08:23 PM
The numbers on LED lights usually indicate either their color temperature or LED chip type. Color temperature, measured in Kelvin (K), such as 2700K, 4000K, or 5000K, defines how warm or cool the light appears, with lower values producing a soft, yellowish glow and higher values giving off a bright, daylight-like tone. Numbers like 2835, 3528, or 5050 refer to the LED chip size in millimeters (for example, 5.0×5.0 mm for 5050), which affects the light’s brightness, efficiency, and power usage. In addition, LEDs may also list CRI (Color Rendering Index) and lumen output, which describe color accuracy and overall brightness. Together, these specifications help determine an LED’s appearance, performance, and quality.
