A device that allows you to control heating and cooling systems to maintain a set temperature within certain ranges. The thermostat can keep the temperature low or high depending on the desired level. This type of device uses physical mechanisms to measure the air temperature and activate the processes that will turn the system on and off. Various technological sensors are used, from bimetallic strips, wax balls, bulbs and air tubes. These sensors react according to changes in temperature and by expansion or contraction, activate switches to raise or lower the temperature. This model maintains a range of -30 to 30°C.