The heavy duty truck scanner AL529HD is a professional service tool, which designed for the Heavy Duty vehicle technician. This easy-to-use handheld tool supports J1939 and J1708 HD Communication protocols to read and erase codes, test and display and record Live Data. The tool also supports all 10 modes of OBDII communications. [Autels latest code reader tools, the AL529HD can both diagnose OBDII/EOBD-compatible vehicles and heavy duty vehicles utilizing SAE-J1939 and SAE-J1708 protocols. AutoLink AL529HD can read real-time PCM data stream, display real-time oxygen sensor test data, read, store and replay real-time sensor data, print data through Windows PC, multilingual (including English, Spanish and French) menus and DTC definitions. AL529HD troubleshooting program code prompts to help technicians in effective vehicle diagnosis and maintenance, patented one-key ready button, used for quick status check and driving cycle verification, color-coded leds and built-in spea