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The product built-in device for mini generating electricity,illuminated by water without battery,the light will go out when the water was turned off.
The illuminated color will change according to the water temperature.
A. Between 0~29 C , the LED faucet light will emit GREEN color;
B. Between 30~39 C, the LED faucet light is BLUE color;
C. Above 40 C, the LED faucet light will emit RED color