This LED water faucet tap needs no battery or external power supply and is temperature sensitive and automatic controlled. It is a very practical and stylish LED water faucet tap for your kitchen. Description: This little device fits on most taps Offers you delightful and wonderful experience No batteries or external power supply is needed Temperature sensitive and automatic controlled LED water faucet tap When water flows down, LED lights will light instantly LED color changes automatically when water temperature changes The colors of the LED lights reminds you the temperature of the water Interface size: M24 * 1 mm (23.5 mm) 6 water tap Fine thread external thread Specification: LED Emitting Color: Green, blue and red Water Temp. at below 31deg C: Green LED light Water Temp. at between 32 to 43 deg C: Blue LED light Water Temp. at between 44 to 50 deg C: Red LED light Water Temp. at above 51 deg C: LED lights flash in RED to avoid scalding Faucet Diameter: Approx. 1.50 inch / 38mm Faucet Length: Approx. 1.57 inch / 40mm External thread Diameter: Approx. 0.93inch / 23.5mm LED Number: 1-LED Material: ABS Color: Silver Package Includes: 1 x LED Water Faucet Tap