Easy Installation. Works under water pressure, no battery needed. Three colors available: Blue LED, 7-Color LED, Heat sensor LED.
Heat Sensor LED: Prevents you from scalding. Between 0-31℃, the light is Blue. Between 32-43℃, the light is Green. Between 44-50℃, the light will emit Red. Above 51℃, the light will emit Flickering Red. 7-Color LED: The LEDs are continuously changing in 7 different colors.
Works, but a little flaky. Temperature sensing not to good. Looks cool when working, something like a light vortex / tornado within the wand.
I have the "rainfall" temp sensing square unit also, both do not seem to be sensitive enough.