--- product_id: 215835026 title: "KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component" brand: "kzyee" price: "$330.66" currency: USD in_stock: true url: https://www.desertcart.us/products/215835026-kzyee-km50-upgrade-of-km10-power-circuit-probe-kit-12v store_origin: US region: United States of America --- # 7 advanced test modes real-time waveform display auto-reset circuit breaker KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component **Brand:** kzyee **Price:** $330.66 **Availability:** ✅ In Stock ## Summary > ⚡ Diagnose smarter, faster, and safer — don’t get left in the dark! ## Quick Answers - **What is this?** KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component by kzyee - **How much does it cost?** $330.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/215835026-kzyee-km50-upgrade-of-km10-power-circuit-probe-kit-12v) ## Best For - kzyee enthusiasts ## Why This Product - Trusted kzyee brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Waveform Wizardry:** Catch elusive intermittent faults instantly with vibrant TFT color waveform and digital displays. - • **Speedy Fault Finder:** Trace shorts, bad grounds, and continuity issues in minutes with visual LEDs and buzzer alerts. - • **Built for Modern Vehicles:** Auto-reset breaker safeguards sensitive ECUs and sensors, ensuring safe, damage-free diagnostics. - • **7-in-1 Diagnostic Powerhouse:** Master AC/DC voltage, resistance, diode, frequency, duty cycle, and fuel injection tests with one sleek tool. - • **Instant Component Activation:** Power up lights, fans, motors, and injectors on the spot—no disassembly, no guesswork. ## Overview The KZYEE KM50 is a professional-grade automotive power circuit probe featuring 7 advanced diagnostic modes including AC/DC voltage, resistance, diode, frequency, duty cycle, and fuel injection testing. It offers real-time waveform display to detect intermittent faults, instant component activation for quick verification, and an auto-reset circuit breaker to protect modern vehicle ECUs. Compatible with 12V and 24V systems across cars, trucks, RVs, and boats, it’s built tough with impact-resistant materials and designed for efficient, accurate diagnostics that save time and prevent unnecessary part replacements. ## Description KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component ## Features - 🚀【7️⃣-Mode Advanced Circuit Diagnostics – Beyond Basic Power Circuit Probes 】While standard power test probes cover AC/DC voltage, Resistance, and Diode, the KM50 automotive circuit tester goes further with FREQUENCY, DUTY CYCLE, and FUEL INJECTION circuit testing, delivering 7 advanced diagnostic modes in one tool. These signal-level tests reveal PWM signals, sensor waveforms, and injector control pulses via real-time waveform and digital displays -- helping identify weak sensors, unstable signals, or abnormal injection behavior with confidence. - 【 Real-Time Waveform Display – Catch Faults Basic Testers Miss 】Intermittent faults often look “normal” in static voltage readings but fail under real operating conditions. The TFT color display shows live signal waveforms, revealing injector control pulses, duty-cycle fluctuations, and abnormal voltage patterns as they occur. Adjustable sampling and dual waveform/digital views expose unstable signals, dropouts, and irregular behavior that basic power diagnose probes can’t show -- helping you pinpoint the real cause instead of guessing or replacing good parts. - 【Diagnose Faster – Trace Shorts and Bad Grounds in Minutes】KM50 turns complex electrical checks into a guided, time-saving process. Visual LEDs and buzzer alerts instantly show voltage, ground and continuity status, helping you locate shorts, opens and faulty grounds in minutes. This power diagnostic probe combines efficiency and accuracy, while the built-in auto-reset breaker protects both the vehicle and the tool—so you work faster and finish repairs right the first time. - 【Instant Component Activation – Know If It’s the Part or the Wire】Press the rocker switch to apply positive or negative current and power components instantly – lights, fans, motors or injectors. This power signal probe tester allows direct component activation to verify circuits without removing parts. No jumper leads, no disassembly, no guessing – just quick, reliable proof that saves time, money and unnecessary part swaps. - 【Auto-Reset Circuit Breaker – Safe for Modern ECU Systems】Built for today’s computerized vehicles, the internal auto-reset breaker instantly cuts power during overload and resets automatically within a minute. The low-current (<100 mA) design protects sensitive ECUs, sensors and airbags. This power current probe tool lets you test circuits safely without risking damage – an essential feature for any automotive power circuit probe used on modern vehicles. - 【Smart Feedback Design – Visual, Audible and Practical】Red/green LEDs and tone alerts instantly indicate polarity and continuity. A built-in LED work light illuminates dark engine bays, and the ergonomic anti-slip grip ensures one-hand operation with comfort and control. Whether under a dashboard or beneath a truck, this power diagnostic probe tester keeps you focused on results, not on reading manuals – a must-have automotive diagnostic circuit tester for professionals and beginners alike. - 【Universal Compatibility – Cars, Trucks, RVs and Boats】Covering 8–30 V DC, this automotive power circuit probe tester works seamlessly on 12 V and 24 V systems across cars, diesel trucks, trailers and marine equipment. Wherever electricity flows, it helps you trace, test and repair circuits quickly – a portable, versatile power wire probe trusted by technicians and DIYers alike. - 【Built Tough – Professional-Grade Durability and Precision 】Encased in impact-resistant ABS plastic and reinforced with heavy-duty cables, KM50 is engineered for daily workshop use. Includes probe tip, ground lead, extension cable and battery clamp, all stored in a protective EVA hard case. A professional-grade heavy duty power circuit probe designed to perform reliably job after job and built to withstand years of demanding diagnostics. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | KZYEE | | Power Source | Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com | | Style | KM50 Automotive circuit tester reveals hidden problems others miss! 7 Advanced Test Modes (DC/AC Voltage, Resistance, Diode, Frequency, Duty Cycle, Fuel Injection) – Quickly identify faulty circuits while eliminating good ones, cutting diagnostic time by 80%! | | Color | Orange | | Min. Operating Voltage | 12 | | Measurement Type | Multimeter | | Manufacturer | KZYEE | | Item Weight | 2.44 pounds | | Package Dimensions | 10.08 x 8.94 x 2.91 inches | | Item model number | KZYEE-XXX | | Manufacturer Part Number | KM50 | ## Product Details - **Brand:** KZYEE - **Power Source:** Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com - **Style:** KM50 Automotive circuit tester reveals hidden problems others miss! 7 Advanced Test Modes (DC/AC Voltage, Resistance, Diode, Frequency, Duty Cycle, Fuel Injection) – Quickly identify faulty circuits while eliminating good ones, cutting diagnostic time by 80%! - **Color:** Orange - **Min. Operating Voltage:** 12 ## Images ![KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component - Image 1](https://m.media-amazon.com/images/I/71CNODmam7L.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component - Heavy Duty 3-65V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + Puller – Replacement for RV Camper Boat Truck (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/215835026-kzyee-km50-upgrade-of-km10-power-circuit-probe-kit-12v](https://www.desertcart.us/products/215835026-kzyee-km50-upgrade-of-km10-power-circuit-probe-kit-12v) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-09*