Key Specification

1. As the built-in device generating electricity without the battery and any other power connets to water, LED will emit the light.

2. When water flows down, the LED will light instantly and automatically by the water temperature.
A. When water temperature is &below 29 Degree Celsuis Green color(or Blue color) will show automatically.
B. When water temperature is between 30 Degree Celsuis and 39 Degree Celsuis, Blue color (or Green color)will show automatically.
C. When water temperature is above 40 Degree Celsuis, Red color will show automatically.