Let the good humour and change enter your home with beautiful colours. This multi-coloured metal thermostat is resistant to temperatures and can be used both indoors and outdoors. By controlling the internal temperature, you save on heating costs - up to 6% for a drop in temperature of one degree. And you simply feel better. Installed outside, you receive the outside temperature as important information for the home, garden, leisure and work. Les capillaires sont remplis d'un liquide thermométrique spécialement coloré. Le mercure n'est plus utilisé depuis longtemps.