No batteries and external power supply, it will illuminate after water flows down.
ABS chroming material, excellent corrosion resistance, durable.
Ideal for bathroom or kitchen to make it fantastic.

Direction for use:
Firstly, take off net from tap screw thread.
Secondly, install LED faucet light screw thread.
Thirdly, usage of adapter screw thread inside universal adapter. (adapter screw thread not included).

Note:Automatic generation without batteries.

• Water glow LED faucet light with temperature sensor, No batteries, no wire needed.as long as the water flow it will give out light, turn off the water, the light goes out immediately
• The 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 will change colors according to the temperature of water.Water glows Red when water is Hot (temperature above 44°C). Water glows Green when water is Warm (temperature is 32°C - 43°C). Water glows Blue when water is Cold (temperature below 31°C)
• Note: If the LED water faucet lights up, it requires a certain water pressure. And it won't light up if the water pressure is too low.The faucet is made of ABS, so recommend that wrap PTFE tape on the thread when installing the faucet.
• Ideal for bathroom or kitchen to make it fantastic.

Water glow LED faucet light with temperature sensor, No batteries, no wire needed.as long as the water flow it will give out light, turn off the water, the light goes out immediatelyYosoo