[Simple to Use]: The temperature range for this temperature controller is -40 to 110C. 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 is required for the load connection. [High Current 30A Relay]: Supports high power load 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 sensor 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 reaches or exceeds the set temperature, the relay turns off and the 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 a timing period 'T'. Once T is greater than or equal to OPH, the next cycle can begin. Temperature Correction 'OFE' (-10.0 to 10.0C): Corrects for potential temperature deviations after prolonged operation. Actual temperature = measured temperature + correction value. [High Temperature Alarm Function]: When the actual temperature reaches or exceeds the alarm threshold, the system triggers a visual and audible 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 start temperature, stop temperature, and temperature correction. 4. Disconnect power. 5. Connect the load with power supply to the relay output terminal if needed. 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 color variations between the image and the actual product. Measurement error allowed is +/- 1-3 cm.