- Bidirectional Polarity Indicator: The built-in LED indicators provide instant feedback on polarity. A red light signifies positive polarity, while a green light indicates negative polarity. This allows for flexible connection to either terminal, enhancing ease of use during testing. - Extended Spring Wire with Alligator Clip: The spring wire extends up to 110 inches, offering significant flexibility and reach when testing various components. The anti-bending design ensures reliable connections without the risk of poor contact. The large alligator clip facilitates one-handed operation, making it user-friendly. - Clear Digital Display: Equipped with a bright LED digital display, this automotive circuit tester delivers precise voltage readings with 0.1V resolution and ±0.2V accuracy. The display remains clear and visible in both daytime and low-light conditions, outperforming traditional LCD testers. - Advanced Circuit Protection: This premium car fuse tester features a built-in circuit board chip for enhanced reliability. The insulated protective cover ensures a secure grip while providing excellent insulation against accidental shorts. The circuit board includes line protection, reducing the risk of burnout and improving longevity. Practical Applications: - Ideal for automotive troubleshooting, allowing you to quickly identify positive and negative connections in any vehicle. - Perfect for DIY electronics projects, providing a reliable method for testing circuits without professional equipment. - Useful for maintenance and repair work, helping technicians diagnose issues accurately and efficiently. This automotive circuit tester combines functionality, safety, and ease of use, making it an essential tool for both professionals and hobbyists.