1. Built-in hydropower system, no need for battery and external power supply, the LED will light up when the water source is connected;

 2. Change the color according to the temperature of the water. When the water temperature is ≤32 °C, the lamp will glow green. When the water temperature is between 33 °C and 41 °C, the LED light will emit blue light. When the water temperature is between 42 °C and 45 °C, the LED light will emit red light. The water temperature is ≥45. Above °C, the LED light will flash red.

 3. The LED digital display will show the corresponding water temperature.