1. LCD display, easy to read. 2. With control knob function, manual refueling mode, timed start or stop, time setting, etc. 3. Great: The parking heater controller is user-friendly and supports timed start or stop. Remote control pairing is easy. 4. Special: Parking heater knob controller with manual refueling mode, quickly set by the owner, the knob. The product has been thoroughly tested and shipped to ensure perfection. 5. Wide application: 12V/24V power supply voltage parking heater controller, suitable for cars, trucks, etc. Product instruction: 1. Remote control pairing. 2. Refuel in manual mode. 3. Start or stop the timer. 4. Set the time. 5. Remote control code description. 6. In the off setting state, press the first button and press the Confirm button for more than 3 seconds. 7. Enter the remote control start code interface, display HFA, press the remote control code, 8. The code exits the code interface, the machine is in the ship state, the code fails to enter the ship