[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 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 devices, place the sensor probe, set the desired temperature, and the controller will operate automatically. [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 turns on and the heating device starts. 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 & Temperature Correction Function]: Delay Start 'OPH': After a heating or cooling cycle ends, the system begins a timer 'T'. Once T is greater than or equal to OPH, the next cycle can begin. Temperature Correction 'OFE' (-10.0 to 10.0°C): 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 activates a visual and audible alarm and disconnects the relay. Press any button to silence the alarm. Usage 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 separate 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 variations between the product color in images and the actual item. Measurement error allowance is +/- 1-3 cm.