[Simple to Use]: The temperature range for this temperature controller is -40 to 110°C. 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 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 devices, place the sensor probe, set the desired temperature, and the unit 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 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 waits for the delay time (T) to reach the OPH value before starting the next cycle. Temperature Correction (OFE) range: -10.0 to +10.0°C. This function allows correction of measurement deviations that may occur over long-term operation. 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 start temperature, stop temperature, and temperature correction value. 4. Disconnect power. 5. Connect the load (heating/cooling device) to the relay output terminal with its own power supply 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: Other items not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement error allowed within +/- 1-3 cm.