LED Faucet Tap,Led tap:best for any bathroom kitchen sink tap,red for hot,blue for warm,green for cold Protect you from scalding by tsting the water temperature with this 3 Colour Changing Faucet Light. It will shows from green, blue to red as water temperature changes. Great decoration piece for your bathroom and kitchen sink water tap. Description: This brilliant LED Faucet Light adds aesthetic style to any sink. The light is activated by water pressure and turns off automatically with the water. A temperature sensitive Faucet Light desinged to provide a visual indication of water temperature. It works by illuminating the water that comes out of your faucet. Water glows green when it is safe to touch below 30 °C, and automatically switches to blue when it gets 30°C to 35°C. When water temperature is between 35 °C and 45°C, it shows red. It flashes red when temperature is above 45 °C. Easy to install! Just screw on the Water Temperature Faucet Light. It fits most standard water faucets. Ideal for bathroom or kitchen. runs on button batteries (can be replaceable) Enclosure: aluminum Surface treatment: Oxidation LED color: green, blue and red Unit Size: about L53 X W30mm(including adapter) The mount dimension of the faucet: 2.12cm in diameter Dimension of the adapter's mount threaded: 2.32cm in diameter From the size, we know that it fits for 2.2cm and 2cm in diameter's apparatus Weight: 121.2gComponents Included: 1x Colour Changing Faucet Light