Versatile circuit tester for DC voltage detection and circuit continuity testing, designed for multi-vehicle use. It delivers intuitive operation and reliable performance for common automotive electrical diagnostics. Durable construction for long life. Built to withstand shocks and vibrations, with robust plug contacts designed for frequent use, helping maintain reliable car circuit testing over time. Efficient fault detection. Fast fault detection with sensitive touch points, providing real-time voltage feedback and a clear double-color status indication for quick assessment during diagnostics. Easy to handle. Ergonomic handheld design with integrated probe functionality for precise diagnostics, enabling easy single-hand use without sacrificing accuracy or convenience. Use scenarios - Inspect a vehicle’s fuse box and power circuits to verify voltage presence and circuit continuity before installing a replacement accessory. - Troubleshoot wiring and connections for aftermarket devices (dash cam, stereo, LED lighting) to confirm correct voltage and continuity. - Check battery cables, alternator leads, and grounding paths across different vehicles to locate loose, corroded, or high-resistance connections.