Features: The auto special wireless test pen is a must have tool for automotive professionals, providing a convenient and fast solution for circuit detection without the need to directly connect with car. With its high sensitivity test and precise circuit detection chip, this wireless test pen provides accurate and reliable results, allowing you to quickly detect whether the circuit is powered, judge positive and negative poles, and locate faults. Designed for automotive maintenance and repair professionals, as well as diy enthusiasts, this test pen is suitable for anyone involved in automotive circuit testing. Whether you're working in an automotive repair shop or conducting automotive electrical system training, this wireless test pen will greatly improve your repair efficiency and serve as a useful tool for teaching and experiments. Made of durable materials and resistant to drops and shocks, the auto special wireless test pen ensures long term use in complex automotive repair environments, making it a reliable tool for all your circuit detection and repair needs. Specifications: Material:Plastic+Electronic Component Size:As Picture Shown Color:Blue For 12V and 24V automobile circuits Package Includes: 1x Wireless Test Pen note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.