color changing LED hand shower head

hand shower head 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 ≤32c, Green color will show automatically; B. When water temperature is between 33c 41c, Blue color will show automatically; C. When water temperature is between 42c 45c, Red color will show automatically; D. When water temperature is above 46c, Red color will flash immediately;