What can the KM50 test, and does it work with 12V/24V vehicles?

KM50 supports 12V/24V vehicle electrical systems with 7 modes: DC/AC Voltage, Frequency, Duty Cycle, Fuel Inject, Resistance and Diode. It also checks continuity, polarity, short circuits, bad grounds and components.

What can the KM50 Fuel Inject mode show?

Fuel Inject mode shows injection time, injector supply voltage, ground voltage, reverse induced voltage and the control waveform in real time, helping you evaluate injector circuit behavior before deeper wiring or component checks.

an the KM50 activate motors, lights and other electrical components?

Yes. Component Activation can apply positive power or ground through the probe tip to check whether supported electrical components respond, helping you narrow down whether the issue is in the component or the circuit before replacing parts.

Can the KM50 test sensor and signal circuits?

Yes. KM50 supports signal circuit testing. Frequency and Duty Cycle modes can show digital data and live waveforms, helping you observe changing signals and identify abnormal circuit behavior beyond basic voltage checks.

Is the KM50 easy to use in dark areas, and does it have overload protection?

Yes. LED lighting helps illuminate dark work areas, while the TFT display, red/green LEDs and buzzer provide clear feedback. An internal circuit breaker trips during overload to help protect the tester.

Km50 Power Circuit Probe And Automotive Circuit Tester Live Waveform

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🔧 Diagnose Like a Pro, Save Time Like a Boss!

ALL IN ONE 7 MODE DIAGNOSTICS - Master AC/DC voltage, resistance, diode, frequency, duty cycle, fuel injection, and component activation in one sleek probe—diagnose faster, smarter.
DYNAMIC LIVE WAVEFORM DISPLAY - See real-time signal patterns on a vibrant color TFT screen with adjustable sampling—spot intermittent faults others miss, even in dark engine bays.
SMART AUTO RESET BREAKER ALERTS - Built-in 10A breaker with LED and buzzer alerts protects sensitive vehicle electronics while giving instant polarity and continuity feedback.
EXTENDED 40 FT REACH WITH RUGGED KIT - Work effortlessly on trucks, trailers, and RVs with a 20ft cable plus 20ft extension, all packed in a durable EVA case—ready for any job, anywhere.
NO DISASSEMBLY COMPONENT ACTIVATION - Power up lights, fans, relays, and injectors directly at the probe tip without removing parts—save time and avoid costly guesswork.

The KZYEE KM50 is a professional-grade automotive circuit tester designed for 12V/24V systems, featuring 7 advanced diagnostic modes including AC/DC voltage, resistance, diode, frequency, duty cycle, and fuel injection testing. Its vibrant color TFT screen displays live waveforms for precise real-time analysis, while the unique component activation function allows testing without disassembly. Equipped with a 10A auto-reset breaker and visual alerts, plus a 40ft total cable reach and rugged carrying case, the KM50 empowers DIYers and technicians to quickly identify and fix electrical issues with confidence and efficiency.

Specifications

ASIN	B08CDF1SPJ
Best Sellers Rank	#50,394 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Current Probes
Brand	KZYEE
Brand Name	KZYEE
Color	Orange
Compatible Devices	Vehicles with 12V or 24V electrical systems and a cigarette lighter port
Customer Reviews	4.6 out of 5 stars 3,874 Reviews
Direct Current Maximum	8 A
Item Highlight	12V/24V Short Circuit Finder, Open Circuit Detection, AC/DC Voltage, Resistance, Frequency, Duty Cycle, Component Activation
Item Weight	0.48 kg
Manufacturer	KZYEE
Maximum Operating Voltage	30 volts
Measurement Type	Multimeter
Min. Operating Voltage	8 volts
Minimum Operating Voltage	8 volts
Model	KZYEE-KM50
Number of Items	1
Number of Packs	1
Part Number	KZYEE
Power Source	Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com Power Source Vehicle 12v Battery Power Supply Or Ci-garette Lighter Power Supply; 24/7 Assistance Via Support@kzyeetech. Com See more
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%! 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%! See more
Style Name	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%!
Unit Count	1 Count
Upper Temperature Rating	60 °C

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237376CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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KM50 Power Circuit Probe & Automotive Circuit Tester, Live Waveform

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