Features Control temperature by setting the temperature set value and the different value.Automatic over temperature alarm. This mini temperature controller is an excellent and convenient multifunction device for controlling temperature in farms,greenhouse, refrigeration house. The stability of temperature is one of the crucial factors that contributes to the health and safety of your animal or vegetable. Touch switch mode, and 0.1°C accuracy, strict control of the temperature.Dual heating and cooling function. This advanced temperature controller can measure and control temperature from -55 to 120 °C. Specifications:Model: STC - 3000Type(Optional): 110-220V10A, 110-220V30AWorking principle: electronic thermostat, digital thermostatPower: 220V10A ,30A/AC220VThermostat temperature range: -55 ℃ ~ 120 ℃ /-67 ~ 248℉Size: 85 x 35 x 65mm/3.34 x 1.38 x 2.56inchWeight: 121g,136gWiring: Package Included:1 x Temperature Controller Package List