1. Description of Heating Mode: If the detected temperature (current temperature) ≤ set temperature hysteresis temperature, the relay turns on and the heater starts working; if the detected temperature (current temperature) ≥ the set temperature, the relay turns off and the heater stops functioning. Set the temperature to 30°C and the hysteresis temperature to 5°C. 2. Functional Description of Automatic Mode: First, select the heating mode/cooling mode; set the temperature and hysteresis. If a delay is required, then set the delay time. Next, configure the and lowtemperature alarms independently. 3. Through this calibration function, the current temperature measured temperature calibration value. Emergency Stop Function: Once the emergency stop is activated, the relay turns off regardless of its current state. After deactivating the emergency stop, the relay returns to its normal state. 4. When the temperature is 20°C ≤ 25°C (30 5 25), the relay starts heating. When the temperature reaches 30°C ≥ the set temperature of 30°C, the relay turns off and stops heating. After completing a heating/cooling cycle, the delay (unit: seconds) determines when the next heating and/or cooling can begin. Temperature Calibration: Longterm operation may lead to deviations.