... 3.Have a switch control working modle 4.CE & ROHS led light shower temperature controlRC-A1 1, ... LED will light instantly an automatically;A,When water temperature is ≤32°C,Green color will show automatically ... Red color will show automatically; D,When water temperature is above 46°C,Red color will flash ... item will change its color by detecting water temperature. RC-B11,As the built-in device generating ...