1. Liquid crystal display, easy to read. 2. Features control button functions including manual refueling mode, timed start or stop, and time setting. 3. Parking heater controller is user-friendly and supports timed start or stop. Remote control pairing is quick and easy. 4. Parking warm air knob controller with manual refueling mode, allowing quick setup by the user. The knob enables easy operation. The product is thoroughly tested before shipment. 5. Wide application: 12V/24V power supply voltage parking heater controller, suitable for cars, trucks, and other vehicles. Product instructions: 1. Remote control pairing. 2. Refuel in manual mode. 3. Start or stop using the timer. 4. Set the time. 5. Remote control code input. 6. In the off setting state, press the first button and hold the Confirm button for more than 3 seconds. 7. Enter the remote control startup code interface, display shows HFA, then press the remote control code. 8. Code exits the code interface. The machine returns to standby state if code entry fails. Code timeout will automatically exit the code input mode. Note: Product design may vary slightly between batches. Actual product may have minor differences in appearance or color, which does not affect functionality. Color: As shown in photo Material: Plastic Package Contents: 1 x LCD remote control (batteries not included) 1 x monitor switch Package includes only the items listed above. Other accessories are not included. Note: Lighting reflections and screen settings may cause slight color variations between the image and the actual item. Measurement error allowed within +/- 1-3 cm.