Features: Control temperature by setting the temperature set value and the different value. This mini temperature controller is an excellent and convenient multifunction device for controlling temperature in farms,greenhouse, refrigeration house . Touch switch mode, and 0.1C accuracy, strict control of the temperature. The stability of temperature is one of the crucial factors that contributes to the health and safety of your animal/vegetables, by utilizing the temperature controller, you can provide an environment with optimal temperature. This advanced temperature controller can measure and control temperature from -55 to 120C. Automatic over temperature alarm. Dual heating and cooling function. Specifications: Model: STC - 3000 Type(Optional): 220V10A, 220V30A Working principle: electronic thermostat, digital thermostat Power: 220V10A ,30A/AC220V Thermostat temperature range: -55 ~ 120 Size: 85 x 35 x 65mm/3.34 x 1.38 x 2.56inch Weight: 121g,136g Wiring: Package Included: 1 x Temperature Controller Note: This product has only Celsius display, No Fahrenheit (although the product label marked )