Temperature control function: The thermostat range is -40C to 120C, set the start and stop temperature to control heating or cooling equipment, the input is 100-250V, 50 or 60Hz, supports 16A timing thermostat, 3680W load, suitable. for most household appliances. Timer function: The thermostat timer socket has F01-F04 mode, F01 cycle time control mode, F02 countdown mode on, the F03 countdown mode off and F04 countdown on, countdown mode off, time range is 0-99 hours and 59 minutes. Various functions: heating or cooling function timing 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 or B3950 temperature sensor for longer life. A variety of electrical appliances: thermostatic timers are widely used in households, heating and cooling equipment, incubators, greenhouses, carbon crystal heating, aquaculture, etc.