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Electric Vehicle Controller:The Yilun Modification Car Treasure is an electric vehicle controller, designed for seamless operation and control of your electric vehicles. . Detector Function:Equipped with a detector function, this device ensures the safety and reliability of your electric vehicles by detecting any potential issues. . Battery Testing Feature:The product features a battery testing feature, allowing you to monitor the battery health of your electric vehicles and prevent unexpected failures. . Versatile Application:This device is not only suitable for electric vehicles but also for other devices that require electrical testing, making it a versatile addition to your toolkit. . Easy to Use:With its user-friendly interface, the Yilun Modification Car Treasure is easy to use, even for those who are not technically inclined. . Portable Design:Its compact and lightweight design makes the Yilun Modification Car Treasure highly portable, allowing you to take it with you wherever you go.