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KZYEE KM10 Power Circuit Probe Tester with Live Waveform Display

  • Based on 3,865 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Oct 17
Order within 18 hours and 57 minutes
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Color: Red-Orange


Features

  • 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 6V30V 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.
  • Professional Diagnostics Made Simple Diagnose Wiring, Signal & Ground Circuit Faults. Combines circuit testing, wire tracing, short finding, component activation, and live waveform analysis for trailer wiring, lighting, sensor, ground, and other electrical diagnostics.

Description

KM10 eliminates the guesswork from electrical diagnostics. It quickly traces faults, verifies components, and confirms repairs—helping DIYers and technicians fix electrical problems faster, avoid replacing good parts, and get every repair right the first time. Instantly check voltage, continuity, relays, grounds, and more—no guesswork, no wasted time. CHECK BEFORE YOU TEST. Just connect ground, tap to test, and view real-time results. Easily check bulbs, fuses, grounds, and plug polarity—without removing a single part. Stop wasting time taking things apart. With just one press, our power circuit probe kit sends power directly to the solenoid so you can hear it click—no special tools, no disassembly, just answers. Just touch the probe—KM10 Circuit Tester Kit lights up red for power, green for ground, and stays dark on an open circuit. Fast, foolproof results in seconds. Dead headlight, fan or Relay? Find Out in Seconds. Just touch the wire—no need to strip, jump, or risk a blown fuse. KM10 powers and tests 12V/24V components on the spot. Ideal for fast fixes on cars, trucks, RVs, trailers & more. Handle any circuit job—DC/AC voltage, resistance, and diode checks—without juggling tools or second-guessing results. Trusted by DIYers and professional mechanics, KM10 delivers fast, accurate, and reliable electrical diagnostics. Complete with all essential accessories, it's ready to test batteries, relays, trailer lights, wiring, and more—just plug, probe, and diagnose with confidence. Not sure if the problem comes from power, wiring, continuity, or a component? KM10 brings DC voltage, AC voltage, resistance, and diode testing into one tool, helping you check the essentials faster without reaching for multiple meters or guessing your next step. Check circuits and components first to narrow down faults and avoid unnecessary part replacement. The KZYEE KM10 turns confusion into confidence. In seconds, it shows you if a wire has power, a fuse is blown, or a ground has failed — no more swapping parts or wasting time. Built by real technicians, trusted by pros, and loved by everyday drivers, it’s the one smart probe that replaces an entire toolbox. With 4 quick-scan modes, smart reset protection, 40FT reach, and bright LED feedback, the probe tool makes electrical repairs simple, safe, and satisfying. When problems strike, you’ll fix them faster — and feel like a pro every time. Purchase the KM10 and receive a KS30 spark plug tester at no extra cost. A convenient add-on for basic ignition system checks. 4 Modes - DCVoltage, AC Voltage, Resistance & Diode. 40FT Cable (20ft+20ft Extension), And With A Heavy Duty Portable Case. 7 Modes - DC/AC Voltage, Resistance, Continuity, Frequency, Duty Cycle & Fuel Injector Test. 20FT Cable, And With A Heavy Duty Case. 8 Modes - Multimeter, Oscilloscope, Injector, Battery Test, Relay, Component Activator, Pn-Test & Setup.10+20ft Cable, And with A Case. 4 Modes - DC Voltage, AC Voltage, Resistance & Diode Modes. ONLY 13FT Cable. WITHOUT THE CARRYING CASE. The Perfect Gift for Any Gearhead.

Brand: KZYEE


Power Source: Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com See more


Style: The Ultimate 4-in-1 Power Circuit Probe Diagnose 99% of car electrical issues—faster, smarter, and with zero guesswork. This compact, all-in-one tester combines 4 powerful modes—DC/AC voltage, resistance, and diode checks—giving you instant, accurate answers. A game-changer for pros, DIYers, and car lovers alike. See more


Color: Red-Orange


Item Weight: 3.5 ounces


Power Source: Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com


Minimum Operating Voltage: 12


Upper Temperature Rating: 70 °C


Measurement Type: Multimeter


Compatible Devices: Cars, Trucks, Motorcycles, Trailers, Boats, Vehicle Battery, Cigarette Lighter Power Supply


Style Name: The Ultimate 4-in-1 Power Circuit Probe Diagnose 99% of car electrical issues—faster, smarter, and with zero guesswork. This compact, all-in-one tester combines 4 powerful modes—DC/AC voltage, resistance, and diode checks—giving you instant, accurate answers. A game-changer for pros, DIYers, and car lovers alike.


Color: Red-Orange


Item Weight: 3.5 ounces


Item Dimensions: 11 x 8.8 x 2.9 inches


Specification Met: CE, ETL


Brand Name: KZYEE


Model: KM10


UPC: 670534606919


Number of Items: 1


Item Highlight: 12V–24V automotive electrical tester with component activation, short finding, wire tracing and 40FT cable reach


Warranty Description: 60 DAYS MONEY BACK & 1 YEAR WARRANTY


Manufacturer: KZYEE


Included Components: Carry case, cigarette lighter adapter, battery clip, 20ft extension lead, manual


Part Number: KZYEE


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good product
Color: Vivid Orange
This is a good product.Has a nice long cord.The screen is easy to read.It's a good price, it's functionality works really easy.I like the carrying case that's a good value for the money and the connectivity is really easy
Reviewed in the United States on April 19, 2026 by Patrick Wilson

  • Great product
Color: Orange
For the price this probe is pretty damn good, I’ve used to test radiator fans, retract electronic parking brake motors, and a bunch of other stuff. If you aren’t trying to spend a thousand dollars on a Snap On or Matco power probe this is the probe to get.
Reviewed in the United States on April 8, 2026 by Miguel Angel

  • Quick and Easy Electrical Troubleshooting Tool
Color: Red-Orange
This power circuit probe kit works well for diagnosing a variety of electrical issues. It includes useful features for testing and tracing circuits efficiently. The setup is straightforward once familiar with the tool. Overall, it’s a versatile and practical kit for electrical troubleshooting work.
Reviewed in the United States on May 12, 2026 by Marie Phillips

  • Very satisfied
Color: Orange
More functionality than other brands. Traction of the price
Reviewed in the United States on April 16, 2026 by Wesley pitre

  • Great tool!
Color: Red-Orange
I use this thing ALL the time and it’s priced so well. Understand basic automotive electronics and you’re good.
Reviewed in the United States on March 29, 2026 by Justin Wells

  • Every man should have one
Color: Orange
The tool is awesome.
Reviewed in the United States on June 23, 2026 by Otis Johnson

  • Exelente
Color: Amber Orange
Exelente producto me a ayudado a detectar fallas en vehículos
Reviewed in the United States on May 27, 2026 by Jhon tower

  • I wish it had a current meter.
Color: Red-Orange
Awesome tool but I wish it would show current. It would be simple to add with a simple current meter in line with the ability to supply 12 volts by pushing the button. That would be a great way for troubleshooting working but faulty components like fuel pumps, washer fluid pump, window motors (regulators) and other load sensitive items. If a new fuel pump draws 3 amps but the one in the vehicle is drawing 20 amps or more but still working, a current meter would tell you right away there's a problem. The only reason I mention it in this review is because on the box it comes in, it advertises "Read the AVO meter, voltage, current. and resistance easily". It does not measure current. It's still a great troubleshooting tool. It's a must when looking for electrical problems. Split the circuit, diagnose the circuit. It's that simple. ... show more
Reviewed in the United States on December 15, 2020 by Proud Vet

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