When water flows down, the LED will instantly and automatically1. When water temperature is ¡Ü 32¡ãC,Blue color will show automatically;2. When water temperature is between 33¡ãC-41¡ãC, Green color will show automatically;3. When water temperature is between 42¡ãC-45¡ãC, Red color will show automatically;4. When water temperature is above 46¡ãC, Red color will flash automatically;
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