-40 to 120/-40 to 248The temperature control range is -40 to 120/-40 to 248, fit for many places. LED DISPLAY: This temperature controller adopted large and clear LED display,you can check the number easily and quickly. COOL AND HEAT: This temperature controller support heat and cool temperature control. DELAY START FUNCTION: With delay start function, very convenient in use. MULTIFUNCTIONAL: Temperature upper and lower limit setting function, factory parameter locking function.