[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 is required for the load connection. [High Current 30A Relay]: Supports high power loads 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 device, 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 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 applications. [Delay Start & Temperature Correction Function]: Delay Start (OPH): After a heating or cooling cycle ends, the system waits for the preset OPH time before starting the next cycle. Temperature Correction (OFE) range: -10.0 to +10.0°C. This function allows adjustment for sensor drift over time. 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 to the relay output terminal with a separate power supply 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: Other items not included. Lighting and screen differences may cause slight color variations between image and actual product. Measurement error allowed: +/- 1-3 cm.