Above thermostats are used for underfloor electric heating system, the thermostat is to adjust the current output value of the control load (conductor) to control the temperature and achieve the purpose of constant temperature, electric heating system must be equipped with a temperature control device. Mainly used for household electric heating. The basic working principle is to collect the indoor temperature through the temperature probe, and then compare the collected temperature with the temperature set by the user. When the collection temperature is lower than the set temperature，the temperature controller operates，the heating element is powered off and the system stops, heating, circulating in this way, keeps the temperature in the room within the set value range.