Vehicle Electrical Circuit Tester Pen With 3-48V LED Digital Display, Dual Color Polarity Indicator, Voltage Test Light For Cars And Bikes, Easy Quick Check Diagnostic Tool, Portable Auto Electrical Testing Probe

3-48V LED Vehicle Tester Pen with Dual Polarity Indicator
✔️ Auto voltage detection 3V-48V with LED display and polarity lights

This compact tester pen checks low-voltage automotive circuits and identifies polarity. It's used by technicians for quick diagnostics on cars, bikes, trucks, motorcycles, EVs, and other vehicles in repair shops or on-the-go testing.

✅ Auto voltage range detected with LED display for quick diagnosis
✅ Works across 3V, 6V, 12V, 24V, and 48V systems on vehicles
✅ Positive/negative polarity indication: green for positive, red for negative
✅ Coil spring wire design for easy storage and fast testing
✅ External alligator clip enables hands-free testing on wiring

💡 How does a handy automotive electrical tester pen help diagnose car electrical issues?

It provides quick voltage checks and polarity identification without heavy tools.

- 3-48V voltage range with auto-detection - LED readout for easy viewing - Green for positive, red for negative polarity - Useful for fuses, generators, and circuit tests✝️