1. Function description of automatic mode: 1) First select heating mode/cooling mode. 2) Set the temperature and hysteresis difference, if you need to delay start, set the time of delay start. 3) If you need to set high and low temperature alarms, set the high and low temperature alarm thresholds yourself 2. Description of heating mode: When the detected temperature (current temperature) less than equal set temperature - hysteresis temperature, the relay is turned on, and the heating equipment starts to work. When the detected temperature (current temperature) greater than equal the set temperature, the relay is disconnected and the heating device stops working 3. Description of cooling mode: When the detected temperature (current temperature) greater than equal set temperature + hysteresis temperature, the relay is turned on, and the refrigeration equipment starts to work. When the detected temperature (current temperature) less than equal the set temperature, the relay is disconnected and the refrigeration equipment stops working 4. Description of delayed start function: After a heating/cooling process is over, how long to delay (unit: seconds) to allow the next heating/cooling. Temperature correction function: If the system works for a long time, there may be deviations, which can be corrected by this function, the current temperature = measured temperature + calibration value 5. Emergency braking function (emergency stop function): After the emergency stop is turned on, the relay will be disconnected no matter what state it is in; after the emergency stop is turned off, the relay returns to the normal state. In the automatic mode, when the parameters are set, the product can be disconnected from the network and run offline, and the parameters will not be lost when the power is turned off. High and low temperature alarm function Buzzer on and off: After it is turned on, the buzzer will sound after the alarm, and when the button is pressed, the buzzer will stop s