CANBOXPRO is designed to communicate to our custom Bluetooth module (Visconti Tuning CANBOXPRO) to allow wireless monitoring of the ethanol reading on a Continental Ethanol sensor. When you open the App you click on 'connect' and will be prompted to enter the device PIN. Once connected you will see the ethanol content and fuel temperature on the default page. There is also a settings page that allows you to switch the fuel temp from C to F.