Overview of LED lights on AliExpress The chapter discusses the different types of LED lights available on AliExpress and their varying qualities, including their color temperature and color rendering index.

Testing the efficiency of LED lights The chapter explains the process of testing the efficiency of LED lights in lumens per watt, and the challenges of achieving consistent results due to variations in light angles and uniformity.

Review of specific LED lights The chapter provides reviews of specific LED lights, including their efficiency, color temperature, and color rendering index. The reviewed LED lights include the Cree MTG, Nichia Bi-35 AM R980, LG 3535, and a specialized LED light for disco projectors.

LED lights LED lights with a declared temperature of 4000 Kelvin have a slightly yellow-green color tone, but overall the light is normal. The efficiency of the diodes is normal, but the color temperature affects the efficiency. The LED assembly can hold up to 8 amps, but it is recommended to use it at 4 amps to prevent overheating.

LED matrix The LED matrix has a neutral temperature of 4000 Kelvin and a color rendering index of

The efficiency of the LED matrix is high, and it can produce up to 140 lumens at nominal power. The LED matrix can be used for lighting a room or a workspace.

LED modules LED modules with a color rendering index of 50 have a low efficiency of 50 lumens at nominal voltage. LED modules with a color rendering index of 85 have a normal color temperature, but they have pulsations that can cause eye strain. LED modules with a color rendering index of 95 have a high efficiency of 103 lumens at nominal voltage, and they can be used for decorative purposes or as a work light. LED modules with a color rendering index of 98 have a normal color temperature, but they have a slightly violet color tone.