The Bluetooth ELM327 V011 car tester is a convenient car diagnostic tool that supports the OBD-II protocol, allowing for quick reading of car fault codes and providing real-time data monitoring. By connecting via Bluetooth to a smartphone or tablet, users can easily view vehicle status, perform fault detection, and troubleshooting. Its compact design makes it easy to carry, suitable for car owners and maintenance technicians. Whether for daily maintenance or emergency fault diagnosis, the Bluetooth ELM327 V011 is your essential smart vehicle assistant.