1. LCD Display with Backlight: The newly improved 2.24inch LCD display sets itself apart from most other products on the market. It features a backlight function, allowing you to clearly view the controller's status even in complete darkness, thanks to the intuitive LCD display and operational indicators. 2. Multiple Functions: Includes a 1.7 m / 5.6 ft 10K temperature sensor probe; heating/cooling function; F01F04 timing function; 9.99.9℃ temperature calibration function; memory function; reset function; screen lock protection (turn off) and save all current settings. 3. Temperature Control Function: The temperature control range is 40℃120℃ (40°F248°F). Set the start and stop temperatures to control heating or cooling devices. The thermostat supports a 15A/120V 1800W load. (If the start temperature is higher than the stop temperature, cooling mode is activated; if lower, heating mode is enabled.) This plugin thermostat also supports temperature calibration. 4. Mode Selection: Offers 5 modes: F01 cycle timing control mode, F02 countdown on, F03 countdown off, F04 timed switching mode. Time range: 099 hours and 59 minutes. Time accuracy: up to 10 minutes. Celsius and Fahrenheit can be converted by simply pressing the 'SET' button until the temperature display changes.