The details of products:

1. Run by  water pressure, no battery required

    micro hydro-electric motor inside

    low noise

    long life span, 2 year warranty

    efficient, can run 7-12 LEDs

2.  Temperature Sensitive Switch

    0- 31 degree C     Blue  lights on

   31-45 degree C     Warm white  lights on

   45-50 degree C     Red lights on

   Over 50 degree C  Red lights flashing

3. Material : ABS

4. Two functions

5. Customer design available