Feature:1. For ELM327 Bluetooth V1.5 supports 9 OBDII protocols as follows. Compatible for SAE J1850 PWM (41.6 kbaud) SAE J1850 VPW (10.4 kbaud). Compatible for ISO 91412 (5 baud, 10.4 kbaud) for ISO 142304 KWP (5 baud initial value 10.4 kbaud) for ISO 142304 KWP (fast initialization 10.4 kbaud) for ISO 157654 (11bit ID 500 kbaud) for ISO 157654 (29bit ID 500 kbaud) for ISO 157654 (11bit ID 250 kbaud) for ISO 157654 (29bit ID 250 kbaud)2. OBD2 scanner turns your phone into a professional grade diagnostic scan tool.3. This Bluetooth obd2 scanner has the same function as the expensive ones, it can tell you what's going on with your car's engine, help to determine if you can fix it yourself or go to a mechanic.4. Access a whole new world of information about your vehicle directly on your phone, tablet or PC.5. Very useful gadget for car owners to diagnose check engine light and monitor car sensors.Specification:Item Type: OBD2 Scanner Bluetooth Operating voltage: 12V, internal short circuit, over voltage protectionNominal standby current: 45 mAsize: 3.2x4.7x2.3cmWeight: 22 gramsfor ELM327 function:1. Read the diagnostic trouble code, including generic and manufacturer specific, and display its meaning (more than 3000 common code definitions in the database).2. Clean the fault code and turn off the MIL. (Check Engine light)3. Display current sensor data.4. Engine speed.5. Estimated load value.6. Coolant temperature.7. Fuel system status.8. Speed.9. Short term fuel adjustment.10. Long term fuel adjustment.11. Intake manifold pressure.12. Times ahead of time.13. Intake air temperature.14. Airflow.15. Absolute throttle position.16. Oxygen sensor voltage or related short term fuel tires.17. National Fuel System..Package List:1 x OBD2 Scanner Bluetooth