Onshowy OBD2, Super Mini WIFI OBD II Car Scanner Tool With Power Switch Car Diagnostic Tool Code Reader For iOS Apple and Android Smartphone (white and black) Any question,please email us,we response you within 24 hours and provide technical support.we provide 1 YEAR QUALITY GUARANTEE,WE WILL GIVE YOU REFUND OR SEND YOU REPLACEMENT IF YOU ARE NOT SATISFIED WITH OUR PRODUCT With POWER SWITCH:just press the ON/OFF button,you dont need to plug /unplug it every time SELF-DIAGNOSIS/ SMART SCANNING: : Display current sensor data, including Engine RPM, Calculated Load Value, Coolant Temperature, Fuel System Status, Vehicle Speed, Short Term Fuel Trim, Long Term Fuel Trim, Intake Manifold Pressure, Timing Advance, Intake Air Temperature, Air Flow Rate, Absolute Throttle Position, Oxygen sensor voltages/associated short term fuel trims, Fuel System status, Fuel Pressure. Clear trouble codes and turn off the MIL ("Check Engine" light) Work with all OBDII compliant vehicles; works on 1996 and later vehicles (Volkswagen, GM, Honda, TOYOTA, Nissan, Mazda, Ford, Peugeot, Citroen, BMW, Audi, Skoda, Subaru, Hyundai, Kia, Suzuki, Opel, Chyrysler, Benz, Porsche, Renault, Fiat, Mitsubishi, Isuzu, Daihatsu, etc) Support iOS(iPhone 6 6 plus 5s 5c iPad Air Mini 4) iPhone, iPad, iPod Touch & ANDROID (Samsung S5 S4 Note 3 Note 2.LG 2 Google Nexus )&WINDOWS