Electrical system tools with real time voltage display Real time digital voltage display updates continuously for easy monitoring during car maintenance. The pencil style design provides a compact, convenient hand held tester with a clear digital readout. 12V tester with copper probe Copper probe provides reliable contact for accurate measurement. Built for durability and long life, this 12V tester delivers dependable readings and a sturdy construction. Automotive test light for beginners Beginner friendly automotive test light that is easy to start with no prior experience. Quick and straightforward voltage testing helps you work more efficiently, and it is part of the fuse tester automotive kit for versatile use. Continuity tester with extendable spring cable Continuity tester features an extendable spring cable to reach difficult test points and test any electrical system easily. It includes a light indicator to confirm continuity. Key attributes Function: voltage testing, real time display, continuity testing Compatibility: suitable for automotive electrical systems and general electrical testing Size and form: pencil style digital display for easy handling Cable: extendable spring cable for flexible reach Material and performance: copper probe for accuracy; durable construction; light indicators for quick results Usage scenarios Vehicle electrical diagnosis: test battery connections, charging circuits, and wiring harnesses in a car using the real time voltage readout and light indicators. Fuse and wiring checks: inspect fuses and circuits with the 12V tester and built in fuse tester capability to identify faulty components quickly. General electrical troubleshooting: test outlets, wiring runs, and other electrical systems in a workshop or home environment using the extendable cable and reliable readings.