Features: This little device fits on most taps and lights up a set of LEDs when you turn on the tap, transforming the stream of water into a beautiful waterfall of light. The faucet light changes color according to the water temperature. The color change helps indicate the water temperature. Water glows red when the temperature is above 45°C. Water glows red when the water is hot (temperature 43°C - 45°C). Water glows green when the water is warm (temperature 32°C - 43°C). Water glows blue when the water is cold (temperature below 31°C). Specifications: This little device fits on most taps and lights up a set of LEDs when you turn on the tap, transforming the stream of water into a beautiful waterfall of light. The faucet light changes color according to the water temperature. The color change helps indicate the water temperature. Water glows red when the temperature is above 45°C. Water glows red when the water is hot (temperature 43°C - 45°C). Water glows green when the water is warm (temperature 32°C - 43°C). Water glows blue when the water is cold (temperature below 31°C). Direction for use: First, remove the net from the tap screw thread. Second, install the LED faucet light onto the screw thread. Third, use the adapter screw thread inside the universal adapter (adapter screw thread not included). Note: Operates automatically without batteries. When the water temperature falls between two ranges, the color may flicker. For example, at 43°C, the light may flicker between red and green. Package: 1 x Water Faucet Light