1. Function 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 yourself2. 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 working3. 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 working4. 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 compatible with a long time, there may be deviations, which can be corrected by this function, the current temperature = measured temperature + calibration value5. 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 functionBuzzer 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 soundingHigh 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 temperatureLow 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 temperatureLAN 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 compatible with analysis of the temperature data.Temperature display: digital tube displaySupply voltage: DC 6-30VUSB power supply: supportTemperature control range: -40-110CTemperature control accuracy: 0.1NTC temperature measurement range: -40-110Whether to support 18B20: Yes (-40-110)Output type: relay switch, current within 10AAlarm notification: support WeChat alarm notificationCloud data record: 15 days cloud record, can be exported at any timeTimer switch function: supportcolor:BlackMaterial:plasticPackage Contents:1 x Temperature controller module1 x NTC sensing lineOnly the above package content, other products are not included.Note: Light shooting 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.