WIDE APPLICATIONS: This small device is suitable for most faucets that have internal or external wires. 3 COLOR CHANGE DEPENDING ON TEMPERATURE: Blue color is displayed when the temperature of the water 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 temperature exceeds 46 degrees. PREMIUM MATERIAL: Made of ABS with excellent corrosion resistance. Ideal for bathroom or kitchen, very fantastic and durable. EASY TO INSTALL AND WATER SAVING: The led faucet faucet has water conservation function and connected at the top with the filter water saving, Convenient to use. Help children to avoid scalding water. A device must have for each house. HOT WARNING: If the LED water faucet turns on, there needs to be some water pressure. And it won't turn on if the water pressure is too low. The faucet is made of ABS, so recommend wrapping PTFE tape over the thread when installing the faucet. Be careful not to force too much during installation. (The ABS material is easily broken if you force too much.)