With proper software installed in the host device, you may have following parameters read out from your vehicle:
* Vehicle Speed
* RPM
* Fuel Consumption*
* Engine Coolant Temp
* Fuel Pressure
* Calculated Engine Load
* Throttle Position
* Intake Manifold Pressure
* Air Intake Temp
* Timing Advance
* Mass Air Flow
* Fuel Level
* Barometric Pressure
* EVAP System Vapor Pressure
* Fuel Trim

KONNWEI KW906 OBD2 Scanner

It comes with an ON/OFF switch to prevent constantly disconnecting your unit from the OBDII port. It also support high speed communication and low power sleep mode. By connecting with phone, the OBD2 scanner can quickly read car engine emissions data and check drive cycle verification.

KW906 BT5.0 car OBD2 diagnostic scanner is able to detect and interpret these protocols automatically. It also provides support for high speed communications and a low power sleep mode. Measuring only 5*4*2.5cm, it also has a built-in power switch that eliminates the need to constantly disconnect the device from the OBDII port.