Super Mini ELM327 Bluetooth-Compatible V2.1 OBD2 ELM 327 BT Diagnostic Tool Support All most OBD-II Protocols Tips 1.For the cars of 2010 later, you can choose the V2.1 and V1.5.2.For the cars before 2010,you can choose the V1.5.3.If you can not confirm the year of your car,please choose the V1.5 Version,it is compatible for most cars.4.The Bluetooth ELM327 is for Android Phones,Pads and Window. ELM327 V2.1 Features1. Works on Android/ Symbian/Windows. Please use Android system V4.1 to V4.3 version. No Support IOS2. BT Passwords: 12343. Latest Version SW: V2.1.HW: V2.1.4. This one CAN'T support for Diesel or Trucks and it can't be used on IOS system.5. Latest sw version supports most of OBDII protocols.ELM327 v2.1 OBD2 BT Support 7 Kinds of OBDII protocols as follows:Vehicle Coverage: Works on all OBD2 Vehicles.1.ISO9141-2(5 baud init,10.4Kbaud)2.ISO14230-4 KWP(5 baud init,10.4 Kbaud)3.ISO14230-4 KWP(fast init,10.4 Kbaud)4.ISO15765-4 CAN(11bit ID,500 Kbaud)5.ISO15765-4 CAN(29bit ID,500 Kbaud)6.ISO15765-4 CAN(11bit ID,250 Kbaud)7.ISO15765-4 CAN(29bit ID,250 Kbaud)MINI ELM327 BT Functions 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)Display current sensor data, including: Engine RPM Calculated Load Value