[Simple to Use]: The temperature range for this temperature controller is -40 to 110C. Easy to set and adjust with an HD LCD display and 4-button interface. This is a relay-based temperature controller; an external power supply is required for the load. [High Current 30A Relay]: Supports high power applications up to 220V 30A. Suitable for high-power equipment such as refrigerators, brooders, incubators, fermenters, greenhouses, and more. Connect the power supply and heating or cooling device, place the probe, set the desired temperature, and the controller will operate efficiently. [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. [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 cycle can begin. Temperature Correction (OFE) range: -10.0 to 10.0C. This function allows adjustment for long-term operational deviations. Actual temperature = measured temperature + correction value. [High Temperature Alarm Function]: When the actual temperature reaches or exceeds the alarm threshold, the system triggers a sound and light alarm and disconnects the relay. Press any button to silence the alarm. Use Steps: 1. Connect the sensor to the controller. 2. Power the controller. 3. Set the start temperature, stop temperature, and temperature correction value. 4. Disconnect power. 5. Connect the load with a power supply to the relay output terminal 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 item. Measurement error is +/- 1-3 cm.