Temperature Control Function: The thermostat ranges from -40°C to 120°C. Set the start and stop temperatures to control heating or cooling equipment. Input is 100-250V, 50/60Hz, supports a 16A timed thermostat, 3680W load, suitable for most household appliances. Timer Function: The thermostat timer socket has modes F01-F04: F01 cycle timing control mode, F02 countdown mode on, F03 countdown mode off, and F04 countdown mode on, countdown mode off. The time interval is 0-99 hours and 59 minutes. Multiple Functions: Heating/cooling function; timer function F01-F04; temperature calibration function from -9.9 to 9.9℃; memory function; reset function. Temperature Sensor: The thermostat socket is equipped with a 1.7m NTC10K/B3950 temperature sensor for longer life. A Variety of Electrical Appliances: Thermostatic timers are widely used in households, heating and cooling equipment, incubators, greenhouses, coal crystal heating, aquaculture, etc.