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A cat's body temperature is similar to that of a human, and their movements generate certain heat fluctuations. Infrared sensors rely on heat fluctuations to activate the light, so in theory, cat activity could activate these sensors.

In professional terms, these products are often referred to as "color-changing LED night lights" or "RGB LED night lights," where RGB stands for the three primary colors of red, green, and blue. By combining different red, green, and blue light sources, nearly any visible color can be generated, thus achieving color-changing functionality.

Placing LED night lights with sensors around the bed can significantly improve the convenience and safety of night life. For people who often get up at night or have difficulty in moving, LED night lights with sensors provide touch-free automatic lighting, without the need to fumble for switches, and conveniently return to bed or perform other activities quickly.