[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 control. This is a relay-based temperature controller; an external power supply is required 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, 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 the hysteresis value, 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 devices. [Delay Start and Temperature Correction Function]: Delay Start (OPH): After a heating or cooling cycle completes, the system begins a timer (T). Once T is greater than or equal to OPH, the next heating or cooling cycle can begin. Temperature Correction (OFE -10.0 to 10.0C): Over long-term operation, temperature deviations may occur. This function allows calibration. Actual temperature = measured temperature + correction value. [High Temperature Alarm Function]: When the actual temperature reaches or exceeds the alarm threshold, the system triggers an audible and visual alarm and automatically 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 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: Light and screen display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.