【Cooling and Heating Mode】This digital temperature controller thermostat offers the option to select either cooling or heating mode, providing flexibility for different needs. 【Upper and Lower Limit Setting】You can set the highest and lowest upper limit temperature to prevent accidents or extreme temperature fluctuations. 【Automatic Constant Temperature Control】The temperature controller will automatically start cooling or heating to maintain a constant temperature as per the settings. 【Temperature Calibration】It also allows temperature calibration, enabling you to adjust the temperature according to specific requirements. 【Wide Range and Accurate Control】With a temperature range of -55 to 120 degrees Celsius and an accuracy of 1 degree Celsius, this thermostat ensures precise temperature control.