[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-button interface. This is a relay-based temperature controller; an external power supply must be connected for the load. [High Current 30A Relay]: Supports high power load up to 220V 30A. Suitable for use with high-power equipment such as refrigerators, brooders, incubators, fermenters, greenhouses, and more. Connect the power supply and heating or cooling device, place the sensor probe, set the desired temperature, and the unit will operate automatically. [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 completes, the system begins timing period 'T'. Once T is greater than or equal to OPH, the next cycle can begin. Temperature Correction 'OFE' (-10.0 to 10.0°C): Allows correction of temperature deviations that may occur over extended operation. Actual temperature = measured temperature + calibration value. [High Temperature Alarm Function]: When the actual temperature reaches or exceeds the alarm threshold, the system triggers a visual and ble alarm and automatically disconnects the relay. Press any button to silence the alarm. Use Steps: 1. Connect sensor to controller. 2. Connect power supply to controller. 3. Adjust start temperature, stop temperature, and temperature correction settings. 4. Disconnect power supply. 5. Connect load with power supply at the relay output terminal if required. 6. Reconnect power supply to 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 is +/- 1-3 cm.