Wide range of applications: this small device is suitable for most faucets with internal or external threads. 3 Color changes with temperature: blue when water temperature is 32 degrees. Appears green when the water temperature is between 33 and 41 degrees. Red appears when the water temperature is between 42 and 45 degrees. Flashes red when temperature exceeds 46 degrees. Premium Material: Made of ABS for excellent corrosion resistance. Ideal for bathroom or kitchen, excellent and durable. EASY INSTALLATION AND WATER SAVING: The LED faucet has a water saving function with a water saving filter fixed on the top for easy use. Help your child avoid boiling water. A must-have for every household. Heat Warning: If the faucet LED is on, some water pressure is required. If the water pressure is too low, it will not turn on. The faucet is made of ABS and it is recommended to wrap Teflon tape over the threads when installing the faucet. Be careful not to apply excessive force during installation. (Excessive force can easily damage the ABS material.)