It works like a test light that can power circuits or provide a good known ground. You can power or ground a circuit directly through the top of the device. ANCEL PB50 Product Function 【What is a PB50 Probe Tester?.
The ANCEL PB50 Auto Circuit Tester Power Probe DC AC Voltage Built-in LED Headlight is perfect for individuals who need a portable, battery-powered device to quickly and accurately test the voltage, continuity, and electrical circuits in their vehicles.
