Search  for anything...

KZYEE KM10 Power Circuit Probe Kit, 12V 24V Automotive Circuit Tester, Digital Multimeter, Short Finder, AC/DC Voltage Tester, Diode & Resistance, Current Probe Component Activation, 20FT+20FT Cable

  • Based on 3,828 reviews
Condition: New
Checking for the best price...
$69.98 Why this price?
Memorial Day Sale · 30% off was $99.99

Buy Now, Pay Later


As low as $11.66 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Monday, May 25
Order within 3 hours and 51 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: KM10


Features

  • One Probe Tester Replaces All Diagnose Every Circuit, Fix It Fast Highly recommended by YouTuber mechanics like Tomeighty and AutoFun. The KM10 power circuit probe tool combines all key electrical tests -- Circuit Breaker & Open Circuit Detection, AC/DC Voltage & Polarity Test, Resistance, Diode & Continuity Check, Ground & Signal Circuit Test, Component Activation and Wire Tracing. Quickly locate shorts, opens, or bad grounds without pulling panels. Work smarter, fix faster you deserve this tool.
  • See What Others Miss Reveal Hidden Signals in Real Time Acting as a current probe and electrical system probe tester, the circuit tester reads live DC/AC voltage, frequency, and signal waveforms to detect unstable grounds, weak sensors, or intermittent faults. The color TFT display visualizes signals under real load so you can spot issues early. Ideal for diagnosing injectors, PWM signals, and sensor outputs that ordinary testers misssaving hours of diagnostic time and preventing costly repairs.
  • Verify Before You Replace Power and Test Components Instantly Avoid replacing good parts. The power circuit probe kit instantly powers or grounds components such as lights, fans, pumps, relays, injectors, and trailer lights to verify function. One touch reveals if a component is bad or miswired. Activate parts directly through the probe and confirm before replacing. It cuts repair time, reduces part waste, and ensures every fix is accurate the first time.
  • Safe, Smart & Self-Protected Auto-Reset Breaker Built In Work confidently with built-in protection. The KM10 automotive electrical tester features a 10A auto-reset circuit breaker that trips instantly on overload and restores power within seconds. Prevent sparks or blown fuses while testing sensitive circuits. The durable design makes this power tester probe reliable for long-term shop use, combining safety and stability in every test.
  • Go Further, See Clearer 40FT Reach & LED Work Light Reach any corner easily with 40ft cableideal for long trucks, trailers, or RVs. The circuit tester automotive tool includes a bright LED flashlight and color TFT screen for clear visibility even in dark spaces. Test voltage, signal, and component activation anywhere without moving the battery source. Whether day or night, this probe tester keeps you efficient and in control on every job.
  • Instant Polarity & Continuity Check Know It at a Glance Red and green LEDs instantly show positive, negative, or open circuits, while a buzzer confirms continuity. The electrical system tester translates readings into clear visual feedbackjust touch, see, and hear. Simplify diagnostics, eliminate guesswork, and get instant confidence in every result. Because every second saved is a win in your garage.
  • Trusted by Pros & YouTubers Professional Results, Real Value Recommended by top YouTuber mechanics like Tomeighty and AutoFun, the KM10 Circuit Probe Tester delivers diagnostic capability equal to P~P~3/P~P~4-type tools, but with safer breaker protection, smarter signal display, and greater value. Built for both professionals and DIYers, this automotive circuit tester includes a 1-year warranty and lifetime technical supportbecause real tools earn trust through performance, not promises.

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: 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 Degrees Celsius


Measurement Type: Multimeter


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: Orange


Item Weight: 3.5 Ounces


Item Dimensions: 11 x 8.8 x 2.9 inches


Size: KM10


Package Weight: 1.24 Kilograms


Item Package Quantity: 1


Specification Met: CE, ETL


Warranty Description: 60 DAYS MONEY BACK & 1 YEAR WARRANTY


Required Assembly: No


Warranty Type: Manufacturer and Seller Combination


Brand Name: KZYEE


Title: KZYEE KM10 Power Circuit Probe Kit, 12V 24V Automotive Circuit Tester, Digital Multimeter, Short Finder, AC/DC Voltage Tester, Diode & Resistance, Current Probe Component Activation, 20FT+20FT Cable


List Price: 99.99


Model: KM10


UPC: 670534606919


Manufacturer: KZYEE


Model Name: KM10


Part Number: KM10


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


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 25

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • works like a charm
Size: KM10
a multimeter is nice and has it's place. if you don't have one of these and do any automotive work, buy it.
Reviewed in the United States on March 28, 2026 by RJ

  • Must have
Size: KM10
Use it everyday.
Reviewed in the United States on March 5, 2026 by Dspates

  • It works if you're careful
Size: KM10
I had used it for about a year, no major issues. My only issue with the design is the length of the grounding cable, just a bit short for what I usually need it for, but I've been able to make it work with an extra wire. The only real problem I came across was when I had made the mistake of trying to apply power or ground to a wire when it had the other already active. User error, really. But it was when I kept doing it when I had to apply one of the two before making contact, like in a tight space. It would normally shut down and restart if you made a mistake, like normal. But I had done it quite a few times in a row and it had shut down completely. Few days later, it starting working again, but sometimes when you power it, it doesn't show or do anything on the screen but a blank background. Again, user error caused it. But other than that, having it as a mobile mechanic has saved me so much time, being able to see what is actually happening. I only have the KM10, but I honestly might upgrade to see what I can use the nicer model for. It was well worth the price. ... show more
Reviewed in the United States on June 30, 2023 by Michael Burr

  • Works great but…
Size: KM10
This power probe works great and is easy to use. The only issue for me is the short ground cable on it. Besides that, I’m very pleased with it. Definitely recommend instead of spending a lot of money on a name brand one that does the same thing.
Reviewed in the United States on January 16, 2024 by Tyler Brownell

  • Tester
Size: KM10
Good for the money
Reviewed in the United States on January 23, 2026 by Darren Browning

  • Great tool!
Size: KM10
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

  • Kzyee
Size: KM10
Kzyee is a very helpful circuit probe. It doesn’t frustrate, only failure is your brain 🥴
Reviewed in the United States on November 4, 2025 by Amazon Customer

  • Broken right out of box, then started working next time
Size: KM10
Screen lights up but is always blank, either circuits bad or screen it, but it's doa right out of the box, literally the first time I used it, the same day it arrived. Should not have bought a cheap clone. Next day, I was going to use the non digital parts to chase down my issue, and it started working and I liked it. Since that one was flaky, I got another to try, seems to work, bumping 3 to 3 stars, will update next time I use it, but it's pretty infrequent, that I chase the kind of electrical issue that needs more than just a test light so it might be a while. They did refund the price with no complaints, so that's good. Liked customer service If it seems reliable I'll update the review later. ... show more
Reviewed in the United States on May 19, 2024 by Eric W. Brown

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...