Our thermostat plug allows you to set the start and stop temperature to control heating or cooling equipment with a range of -40℃-120℃ (-40℉-248℉). thermostat support 15A/120V 1800W load. (start temperature stop temperature, cooling; start temperature Less than stop temperature, heating). This thermostat plug also supports temperature calibration. The newly upgraded 2.24-inch LCD screen is different from most other products on the market. It has a backlight function. The clear LCD display and power indicator lights allow you to see the controller's status even in total darkness. F01 cycle mode; F02 countdown ON mode, F03 countdown OFF mode, F04 countdown ON and countdown OFF mode). Timing range: 0-99 hours 59 minutes. Timing accuracy: Up to 10 minutes. 1.7M/5.6FT 10K temperature sensor probe; Heating/Refrigeration Function; F01-F04 Timing Function; -9.9-9.9℃ Temperature Calibration Function; Memory Function; Reset Function; Screen Lock Protection (all current settings are saved after