[Simple to Use] The temperature range for this temperature controller is -40 to 110°C. Easy to set and adjust, featuring an HD LCD display and 4 control buttons. This is a relay-based temperature controller; an external power supply must be connected for the load. [High Current 30A Relay] High power capacity: 220V 30A. Suitable for high-power equipment such as refrigerators, brooders, incubators, fermenters, greenhouses, and more. Connect the power supply and heating or cooling equipment, place the sensor probe, and set the desired temperature for reliable operation. [Heating/Cooling Function] Heating Mode (H): When the detected temperature is less than or equal to the set temperature minus hysteresis, the relay activates and the heating device turns on. When the detected temperature is greater than or equal to the set temperature, the relay turns off and heating stops. Cooling Mode (C) operates on the same principle for cooling applications. [Delay Start & Temperature Correction Function] Delay Start (OPH): After a heating or cooling cycle ends, the system begins a timing period (T). Once T is greater than or equal to OPH, the next heating or cooling cycle can begin. Temperature Correction (OFE) (-10.0 to 10.0°C): Allows for calibration to correct any long-term temperature deviations. Actual temperature = measured temperature + correction value. [High Temperature Alarm Function] When the actual temperature reaches or exceeds the set alarm temperature, the system triggers a visual and ble alarm and automatically disconnects the relay. Press any button to deactivate the alarm. Use Steps: 1. Connect the sensor to the controller. 2. Power on the controller. 3. Adjust start temperature, stop temperature, and temperature correction settings. 4. Disconnect power. 5. Connect the load to the relay output terminal with an external power supply if required. 6. Reconnect power to the controller. 7. Test and begin operation. Color: As shown Material: Plastic Package Contents: 1 x XY-DT01 Digital Temperature Controller Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight variations between the product color in images and the actual product. Measurement error allowed: +/- 1-3 cm.