TRIAC thermostats are the most precise thermostats on the market (temperature stays within 0.15C / 0.27F of setting). This not only ensures total comfort (you are never too hot or too cold), but also saves energy. For example, if you set the thermostat to 21ºC, the room temperature will remain at 21ºC, and not dip to 19C. Unlike conventional mechanical thermostats, there is no need to set the temperature at 23C to ensure the temperature does not dip below 21C.