Docooler Digital Temperature Controller Thermocouple with Sensor (-50~110&deg;C)(90~250V) With large and clear LED display for better readability. Wide temperature measuring range. Heating and cooling control. Delay protection function. All parameters can be set to default setting after short circuit. Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, boiler, steamer, industrial equipments and other temperature-controlled systems.