Specifications

v1.5 obd2 elm327 usb can-bus scanner:supports all OBD-II protocols and is dispatched with a number of compatible
programs.

v1.5 obd2 elm327 usb can-bus scanner :

ELM327 USB is the latest PC-based scan tool. It supports all OBD-II protocols and is dispatched with a number of compatible programs. The processor is an ELM327 USB. The output protocol (connection to laptop) is USB.
Processor: ELM327 USB

OBD-II Protocols: 

ISO15765-4
(CAN) 
ISO14230-4 (KWP2000)
ISO9141-2
J1850 VPW
J1850 PWM

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

Description:

OBD-II Software for ELM327 USB 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.

The software supports two platforms - DOS and Windows.
 
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

Free software:
Scantool.net 
GM Mode 22 Scan Tool
by Terry 
OBD Gauge for PalmOS and Pocket PC by Dana Peters 
OBD Logger by
Jonathan Senkerik 
OBD-II ScanMaster by Wladimir Gurskij (ScanMaster 3.52 -
local copy) 
obd2crazy.com 
OBD2 Scantool by Ivan Andrewjeski 
OBDII for ELM322 by David Huffman 
pyOBD by Donour Sizemore for MacOSX and Linux 
RDDTC by Pete Calinski 
Real Scan by Brent Harris