Notice: Since the motherboard has 12V and 24V distinction, please select the correct specification when placing an order. In order to ensure that this motherboard can be used successfully, I recommend buyers to purchase additional controllers and remotes from our store. Description: 1.High quality replacement part. 2. 100% new arrival, suitable for 3KW/5KW/8KW Diesel air heater. 3.Directly replace the old or broken one, easy to install. Remote Control To Code Description: 1.Pressing the up button first and then press the confirmation button to hold more than 3 seconds while in the off setting state. 2.To enter the remote control to the code interface,display [HFA-]. 3.Press the remote control to launch the remote code. 4.The machine enters the boot state,if the code failed will not enter the boot state. 5.The code will automatically exit when it is over time. Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Please allow slight dimension difference due to different manual measurement.