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) 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) 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 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 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 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 area network will upload a piece of temperature data in 1 second. After clicking "Export", it will be automatically exported to EXCEL for analysis of the 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 to support 18B20: Yes (-40-110) Output type: relay switch, current within 10A Alarm notification: support WeChat alarm notification Cloud data record: 15 days cloud record, can be exported at any time Timer switch function: support color:Black Material:plastic Package Contents: 1 x Temperature controller module 1 x NTC sensing line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.