It supports all OBD-II protocols.Bluetooth connection， no Batteries， Cables， or Switches.Wireless (Bluetooth) 5~10 meterRetrieve Fault Codes (DTCs) and clear Check Engine lights.Can also be used with a PC with a Bluetooth Card. Features:Read diagnostic trouble codes， both generic and manufacturer-specific ， and display their meaning (over 3000 generic code definitions in the database).Clear trouble codes and turn off the MIL ("Check Engine" light)Set the maximum number of responses to obtainRemove spaces from ECU responses (to speed data transmission)Store a unique identifier in EEPROMSet the CAN mask and filter with one commandEasily switch between variable and fixed CAN message lengthsSend CAN remote frames (RTRs) Display current sensor data， including:Engine RPMCalculated Load ValueCoolant TemperatureFuel System StatusVehicle SpeedShort Term Fuel TrimLong Term Fuel TrimIntake Manifold PressureTiming AdvanceIntake Air TemperatureAir Flow RateAbsolute Throttle PositionOxygen sensor voltages/associated short term fuel trimsFuel System statusFuel PressureMany others... Multi-Protocol Support:1.SAE J1850 PWM(41.6Kbaud)2.SAE J1850 VPW(10.4Kbaud)3.ISO9141-2(5 baud init，10.4Kbaud)4.ISO14230-4 KWP(5 baud init，10.4 Kbaud)5.ISO14230-4 KWP(fast init，10.4 Kbaud)6.ISO15765-4 CAN(11bit ID，500 Kbaud)7.ISO15765-4 CAN(29bit ID，500 Kbaud)8.ISO15765-4 CAN(11bit ID，250 Kbaud)9.ISO15765-4 CAN(29bit ID，250 Kbaud)A.SAE J1939 CAN(29bit ID，250*Kbaud)B.USER1 CAN(11*bit ID，125*Kbaud)C.USER2 CAN(11*bit ID，50*kbaud) *default settings(user adjustable)