Ethanol Sensor Interface (aka ESI) is a plug and play "In-Car Ethanol measurement kit" coupled with its own Android application to bring to you the ability to read what kind of mixture is running in your cars fuel flow system.Reads your cars Ethanol current mix going from tank to the fuel injectors ramp.Reads the fuel temperature also .Uses Bluetooth© BLE techology to communicate with Android aplicationHave an HTTP embedded server via Wifi© to configure and calibrate your valuesOptional support for external arduino QLED display 128 x 64.... and more to come.