If it were me, I think I would install one on every faucet at home You no longer have to worry about being burned by water, or the water is too cold 3 Colors Depend On Water Temperature When the water temperature is below 31, the light color is blue. When the water temperature is between 32 to 43, the right shows green. When the water temperature is between 44 to 99, it turns to red.When the water temperature is higher than 51, the light flashing red. Cool Design This product has mini built-in generating electricity devices,it does not need batteries and power supplies, as long as the water flow it will give out light.The products are beautiful, environmentally friendly and energy efficient. How to use Suitable for various faucets in bathrooms, kitchens and public toilets
