ELM327 car diagnostic scanner

It supports all OBD-II protocols and is dispatched with a number of compatible programs. The processor is an ELM327. The output protocol (connection to laptop) is USB. OBD-II Software for ELM327 is a free program that allows you to use your PC and a hardware interface to get the information from your car's computer.
The program is very user-friendly, and easy to learn. It is also very easy to install: simply extract the files into a folder on your computer's hard drive, and you're ready to go. To uninstall the program, simply delete the entire contents of the folder where the program resides.
Features: The program lets you perform the following operations:
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.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 .Many others.Upcoming Features:Data graphing and logging.Freeze Frame data.Continuous and Non-Continuous Oxygen Sensor test results
The software supports two platforms - DOS and Windows.
OBD-II Protocols:
ISO15765-4 (CAN)
ISO14230-4 (KWP2000)
ISO9141-2
J1850 VPW
Output protocol: RS232
Baud rate: 9600 or 38400
Indicator LEDs: OBD Tx/Rx, RS232 Tx/Rx, Power
Operating voltage: 12V, internal protection from short circuits/overvoltages
Nominal idle current: 45 mA
Free software: