KZYEE KM10 Power Circuit Probe Tester with Live Waveform Display

Find Electrical Faults Faster — Locate Shorts, Opens, Bad Grounds & Voltage Drops. Use short finding and wire tracing to quickly narrow down wiring faults. Red/green LEDs and audible alerts help identify positive, negative, and open circuits on 6V–30V systems.

See Signals in Real Time — Spot Weak Signals, Voltage Dropouts & Intermittent Faults. View voltage, frequency, duty cycle, PWM signals, injector pulses, and sensor waveforms on the color TFT screen for faster electrical troubleshooting.

Test Before You Replace — Isolate Component Failures, Power & Ground Circuit Faults. Apply power or ground to fans, fuel pumps, relays, injectors, solenoids, lights, motors, and more to determine whether the fault is in the component or circuit.

Built-In Protection for Safer Testing — Guard Against Overloads & Short Circuits. The 10A auto-reset circuit breaker trips during overload or short-circuit conditions and resets within seconds to help protect the tool and vehicle circuits.

Reach the Whole Vehicle — 40FT Cable Reach for Long Vehicles & Hard-to-Reach Areas. A 20FT main cable plus 20FT extension provides up to 40FT of reach for cars, trucks, trailers, RVs, buses, and boats. The built-in LED improves visibility in dark areas.