How many times have we burned our fingers when checking the temperature of the water for showering ?, many, at least me. For those who acquire these led lights It will no longer be necessary to perform this procedure since these lights, placed in the shower, inform about the water temperature: azul when it's cold and Red when it is hot (32 degrees of heat).
The curious part of the invention is that they light up when water flows through the shower because the pressure of the water creates energy when passing through the small turbines that are inside. This is one of the models that can be found in the market, manufactured by Agualem
Its price is 45 dollars (something less than 30 euros). But I have a question ... what will be the color of the shower when the water is warm?