WIDE APPLICATIONS: This small device is suitable for most faucets that have internal or external threads. 3 COLOR CHANGE WITH TEMPERATURE: Blue color shows when the water temperature is 32 degrees. Green color is displayed when the water temperature is between 33-41 degrees. The red color appears when the water temperature is between 42 and 45 degrees. Red color flashes when the temperature exceeds 46 degrees. PREMIUM MATERIAL: Made of ABS with excellent corrosion resistance. Ideal for bathroom or kitchen use, durable and functional. EASY TO INSTALL AND WATER SAVING: The LED faucet has a water conservation function and connects with a filter for water-saving performance. Convenient to use and helps children avoid exposure to hot water. A must-have device for every home. WARM WARNING: The LED light requires sufficient water pressure to operate and will not turn on if the water pressure is too low. The faucet is made of ABS material; it is recommended to use PTFE tape on the threads during installation. Avoid applying excessive force during installation as ABS can crack under high pressure.