Faucet Light Combo Product# red-blue combo   $26.95  Free Shipping Now The TC Temperature controlled faucet lights change color depending on the waters temperature. Watch as your water glows a wicked blue with the faucet light.  The Blue leds only activiate when the water is running .  This attaches to most standard faucets and comes with 3 extra batteries. The faucet light has 2 universal adapters that makes it ideal for hooking up to most sinks.  Takes about 20 seconds to install the faucet light with no tools. The TC Unit containes 2 adapters and is only activated by the water. The new and improved Temp Controlled unit comes with 3 spare batteries 1 screen and 2 adapters to fit most faucets.