1. Automatic Mode Function: 1) First select heating/cooling mode. 2) Set the temperature and hysteresis difference; if you need to delay the start, set the delayed start time. 3) If you need to set high and low temperature alarms, set the high and low temperature alarm thresholds yourself. 2. Heating Mode Function: When the detected temperature (current temperature) is less than or equal to set temperature - hysteresis temperature, the relay is turned on and the heating equipment starts working. When the detected temperature (current temperature) is greater than or equal to the set temperature, the relay is disconnected and the heating device stops working. 3. Cooling Mode Function: When the detected temperature (current temperature) is greater than or equal to set temperature + hysteresis temperature, the relay is turned on and the cooling equipment starts working. When the detected temperature (current temperature) is less than or equal to the set temperature, the relay is disconnected and the cooling equipment stops working. 4. 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 operates compatibly for a long time, there may be deviations, which can be corrected with this function, the current temperature = measured temperature + calibration value. 5. Emergency Brake Function (Emergency Stop Function): After the emergency stop is activated, the relay will be disconnected regardless of its state; after the emergency stop is turned off, the relay returns to normal state. In 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 sounding. High Temperature Alarm: After the high temperature alarm is turned on, the relay is disconnected when the current temperature is higher than the high temperature alarm temperature. Low Temperature Alarm: After the low temperature alarm is turned on, the relay is disconnected when the current temperature is lower than the low temperature alarm temperature. LAN Data Export Function: The local network will upload one temperature data per second. After clicking \"Export\", it will automatically be exported to EXCEL compatible with analysis of temperature data. Temperature display: digital tube display. Supply voltage: DC 6-30V. USB power supply: support. Temperature control range: -40-110C. Temperature control accuracy: 0.1. NTC temperature measurement range: -40-110. Whether 18B20 is supported: Yes (-40-110). Output signal type: relay switch, current within 10A. Alarm notification: support WeChat alarm notification. Cloud data register: 15 days of cloud register, can be exported at any time. Timer switch function: support. Color: Black. Material: plastic. Package Contents: 1 x Temperature Control Module. 1 x NTC Sensing Line.