ELM327V1.5 BT4.0 for Android/IOS:1.Special chipBT4.0 Chip2.Connection methodBT4.03.Supported systems: IOS/Android4.Hardware versionV1.55.SoftwareAndroid: ELM327 dentifier/Torgue/Dashcommand/Auto Doctor PC: Scanmaster6.FeaturesSupport 9 Standard OBD2 Protocols, 90% cars can be supportedPurchase NotesAll products are sold without CD. If you need software, please download in the mobile APPstore or scan the packaged QR code, or contact the buyer for download linkand V2.1 Version some car cant supportSuper Mini ELM327 BT4.0 Functions:1: Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database).2: Clear trouble codes and turn off the MIL ( "Check Engine" light)3: Display current sensor data, including:4: Engine RPM5: Calculated Load Value6: Coolant Temperature7: Fuel System Status8: Vehicle Speed9: Short Term Fuel Trim10: Long Term Fuel Trim11: Intake Manifold Pressure12: Timing Advance13: Intake Air Temperature14: Air Flow Rate15: Absolute Throttle Position16: Oxygen sensor voltages / associated short term fuel trims17: Fuel System status18: Fuel Pressure19: Many othersPurchase Notes:1.This link is BT4.0 ELM327 For Android/IOS No PIC18F25K80please note to choose what you need2.When adapter can not connect to your car,please contact us,we will solve problem for you