V321 is a gasoline vehicle code reader that supports nine standard protocols, OBD II/EOBD. Plug and play, it can quickly read the fault information and vehicle parameters of the car, and is a comprehensive fault diagnosis instrument. Before using this product, please read the product manual carefully. Thank you! Precautions: Do not use abrasive cleaning agents to clean this product. Do not allow this product to be heated or placed near a source of light. Do not expose this product to direct sunlight for extended periods of time. Do not attempt to disassemble this product for any modifications, as it does not contain any repair components. Do not use this product in other areas, If you do not intend to use this product for a long period of time, please store it in a dry environment and avoid extreme temperatures and dust. Car inspection: Search for OBD interfaces specifically designed for automobiles. The position of the OBD interface varies for different models (usually located in the lower left inner panel of the dashboard, above the accelerator pedal. For other models, please refer to the following figure). Simply insert and start the vehicle. Product connection cable, used to connect car OBD interface 2.4-inch color display screen, resolution: 320 x 240. Green light: supports vehicle detection. Yellow light: Detected vehicle malfunction. Red light: The product is powered on normally<br><br>Quickly read fault codes Quickly access the testing report Return/Exit Battery testing Confirm button the right or next button Working voltage: DC9~16V 3Working current: 40mA~60mA Operating environment:- 20~60℃ Storage temperature:- 20~60℃ Dimensions: 151 x 81 x 26.2mm 10 languages: English, German, Italian, Polish, French, Spanish, Chinese, Russian, Japanese, Portuguese. Supporting Agreemen: SAE J1850 PWM (41.6Kbaud) SAE J1850 VPW (10.4Kbaud) ISO9141-2(5 baud