... above 46 , Red color will flash immediately.3. This item will change its color by detecting water temperature.Accessories:Stainless ... ,Red Color LEDabove 46 Centigrade degree ,Red color LED will flash immediately.- No battery is required, it`s powered by water ... contact us .supply hose and stent fixing of led faucet, led water tap,led kitchen faucet with the temperature sensor.We can design and make ...