A Wire Tester is an essential diagnostic tool used to verify the integrity, safety, and performance of electrical wires, cables, and harnesses across industries like automotive, aerospace, and electronics manufacturing. It performs critical tests including continuity checks, insulation resistance measurement, and high-voltage withstand testing to detect faults such as short circuits, open circuits, or insulation breakdowns. Advanced models feature multi-channel configurations (up to 64 channels) for complex harness testing, touchscreen interfaces for real-time data visualization, and compliance with ISO/IEC/UL standards. Portable designs with battery operation suit fieldwork, while benchtop versions integrate with QA systems via USB/Ethernet for automated reporting. Ideal for ensuring reliability in EVs, aircraft systems, and consumer electronics, wire testers reduce downtime, prevent electrical failures, and enhance product safety.