... QTY:4LEDs2.Lighting color:blue ,green,red,(according to the water temperature changing)3Regular Working hydraulic pressure:0.1~0.6MPA4Material ... chrome6Thread:EN Standard.Male thread(M24)7No battery needed-water power8When the water temperature is ≤29°C,blue color will show automatically ... C~38°C,green color will show automatically; when the water temperature is ≥39°C,red color will show automatically ...