Camecho&reg; OBDII ELM327 Bluetooth Software OBD2 Car Diagnostic Auto Scanner Tool ELM327 USB USES OBD II software for free software, the computer connected to the car in the on-board computer hardware, using the software, you can get information you want from the onboard computer. Software friendly interface, to get started.Easy installation, extract the files to a computer hard drive folder, which can be started to use;Delete this folder as a whole to uninstall software. Software support three platforms: DOS and Windows Android ELM327 help us deal with the underlying (Layer1 / Layer2) and upper (application layer) communication, let developers don't have to Ignore the complex protocol communication, as long as follow the AT command, found can quickly to develop application software. Usually used to detect the engine data, including engine speed, speed, water temperature, engine load, Air flow rate, O2 Sensor, battery voltage, the car number, such as vehicle computer information, and can clear the error code.