The OBD2 ELM327 USB diagnostic interface is a diagnostic tool that allows you to monitor and analyze parameters while driving. It is equipped with error reading and erasing functions, which facilitates the identification and solution of problems related to automotive LPG gas installations. By connecting to the car's OBD socket and a laptop via a USB cable, the ELM327 interface allows easy access to diagnostic data from dedicated software, such as the Optima nano controller. You can track and analyze OBD parameters, identify potential problems.