Usage Tips:1. Liquid crystal display, easy to read.2. With control button function, refueling manual mode, timed start or stop, time setting, etc.3. Great: Parking heater controller is user-friendly and supports timed start or stop. Remote control Matching is quick and easy.4. : parking warm air knob controller with manual refueling mode, quickly set by the owner, The knob. The product has been thoroughly tested before shipment to 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 .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 startup code interface, display HFA, press the remote control code,8. Code exit the code interface, the machine is in the state of the ship, the code fails to enter the state of the ship. Code timeout will automatically exit the code state.Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UseColour:Photo ColorMaterial:plasticPackage Contents:1 x LCD remote control(Without 2X AAA batteries)1 x monitor switchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.