Vdiagtool V500Pro Circuit Probe Tester | 2mV-100V
Vdiagtool V500Pro Circuit Probe Tester | 2mV-100V

VDIAGTOOL V500 PRO
The Ultimate 2-in-1 Automotive Power Circuit Probe Tester
The 2025 VDIAGTOOL V500PRO is the ultimate all-in-one tool for testing any circuit with precision and ease. Combining the features of the V500 (Mode 1) and V210 (Mode 2), it covers everything from Circuit Breaker Tests and Voltage Testing to Component Activation and Oscilloscope Mode. Designed to save time and money, the V500Pro is the ideal solution for automotive professionals and enthusiasts.

Why Choose VDIAGTOOL V500PRO?
All-In-One Capability: Seamlessly switch between Mode 1 and 2, eliminating the need for multiple tools.
Comprehensive Circuit Coverage: Diagnose all circuit problems, saving time and money!
Powerful Features to Handle Every Challenge:
✔ Smart Test: Automatically identifies and diagnoses issues for faster troubleshooting.
✔ Advanced Multimeter Functions: Measures voltage, resistance, current, diode testing, and more.
✔ Oscilloscope Mode: Analyze waveforms to detect hidden electrical faults.
✔ Relay Testing: Quickly identify faulty relays with precision.
✔ Injector Test & Component Activation: Test injectors and activate components on the go.
✔ 0-5V Power Supply: Simulate signals for advanced testing scenarios.
✔ Short Circuit & Open Circuit Testing: Pinpoint exact locations of issues.
✔ Wire Tracking: Effortlessly trace wires for hidden breaks or shorts.

VDIAGTOOL V500 PRO MODE 1 Smart Test & Multimeter Mode:
🚩Practical design:
👉90° rotating screen: The main screen of VDIAGTOOL V500 PRO circuit diagnostic tool can be rotated 90°. No matter from which angle, you can observe the circuit data on the screen 360° without blind spots so that you can focus on analyzing circuit faults.
👉Built-in flashlight: The V500 PRO has a built-in flashlight, which makes it convenient to perform circuit diagnosis in dark environments.
➤Smart Test: Different from traditional power circuit testers, the 2025 VDIAGTOOL V500PRO 2IN1 Automotive Power Circuit Probe Kit Breaker Finder Tester can automatically identify the signals under test, such as voltage, current, resistance, and other parameters in the circuit, and save switching time between different test modes, allowing customers to focus on repairing circuit faults.
In addition, V500PRO supports 90-degree screen rotation, allowing customers to observe data parameters on the screen at any angle; the built-in flashlight design will enable customers to work normally in dark environments.
➤Multimeter mode:Multimeter: The multimeter in the VDIAGTOOL V500PRO intelligent circuit probe detector is mainly used to measure basic parameters such as voltage, current, resistance, etc. in the circuit, and has a wide measurement range:
👉Voltage Test:0.1-100V
👉Resistance Test: 0KR-200KR
👉Current Test:2mA-25A
👉Frequency Test: 10Hz-1MHZ
👉Oscilloscope:10Hz-100KHZ

VDIAGTOOL V500 PRO MODE 1 RELAY TEST:
➤Relay testing is the process of checking the function and performance of a relay to ensure that it works properly in the circuit. Testing the relay's coil voltage, resistance, contact status, etc. Makes it possible to diagnose whether the relay is damaged or failed, which is crucial to maintaining the reliability and safety of the electrical system. Common relay tests include:
👉 Voltage test
👉 Coil resistance test
👉 Relay action test
👉 Relay delay and retention test.

VDIAGTOOL V500 PRO MODE 1 Oscilloscope Function:
➤Parameter range:
👉Frequency Measurement Range: 10Hz-1000Khz
👉Waveform display: 10Hz-100Khz
➤Oscilloscope Function:
✔️Visual fault diagnosis: The oscilloscope mode visualizes the signal and intuitively displays the change of the signal shape, which makes it convenient for customers to quickly identify abnormal behavior in the circuit, such as waveform distortion, signal attenuation, and other problems.
✔️Detect transient problems: Transient problems in the circuit (such as instantaneous voltage spikes, pulse interference, etc.) are sometimes not captured by static measurement tools (such as multimeters). The oscilloscope can display these transient signals in real-time, which helps to find transient faults, such as power supply fluctuations or unstable signals.
✔️Frequency analysis: The oscilloscope can not only display the waveform of voltage or current but also help users measure the frequency, period, and other characteristics of the signal. This is very useful for debugging and optimizing oscillation circuits, clock circuits, or wireless communication circuits, helping customers accurately diagnose the frequency characteristics of the circuit.
✔️Capture repetitive faults: For periodic faults, the oscilloscope can find the problem by capturing and analyzing the periodic changes. For example, users can see if there is repeated noise interference or signal interruption, which helps to accurately locate the cause of the fault.

VDIAGTOOL V500 PRO MODE 1 0-5V POWER SUPPLY:
➤0-5V Power Supply provides a stable and adjustable low-voltage power supply for customer's circuit diagnosis. It can simulate input voltage, debug sensors, test circuit behavior, and calibrate systems. Customers can use it to quickly locate circuit faults, avoid component damage caused by misoperation, and simplify the process of circuit debugging and optimization. It is especially suitable for debugging and diagnosis of low-power electronic devices and sensor systems. 0-5V Power Supply is commonly used to detect the following low-power electronic devices and sensor systems:
✔️Sensors: oxygen sensors, temperature sensors, pressure sensors, etc
✔️Motor drive modules: electric windows, electric seats, etc.
✔️On-board communication modules: CAN bus interface and other low-power communication modules
✔️Relays and switches: lights, fans, and audio systems
✔️LED indicators: engine fault lights, oil pressure warning lights, etc
➤In circuit diagnosis, 0-5V Power Supply can bring the following conveniences to customers:
✔️Stable power output: Provides stable and adjustable 0-5V voltage to ensure that low-voltage circuits and equipment can work typically within the design range, avoiding component damage or functional abnormalities caused by voltage fluctuations.
✔️Convenient debugging and testing: As an analog signal source, users can easily adjust the output voltage for various circuit tests and debug, quickly verify the impact of different voltage inputs on the circuit, and improve the efficiency of troubleshooting.
✔️High safety: Compared with high-voltage power supplies, 0-5V power supplies are suitable for sensitive electronic components, reducing the risk during the test process, avoiding accidental application of excessive voltage and damage to the equipment, and improving the safety of use.

VDIAGTOOL V500 PRO MODE 1 Component Activation & Injector Test:
➤Component Activation: Component activation is mainly used by circuit testers to confirm and test the function and status of each component in the circuit. By activating different components, users can quickly identify faults and ensure the normal operation of the circuit. This provides customers with practical conveniences such as saving time, improving maintenance efficiency, and reducing unnecessary replacement costs.
➤Injector Test: Injector testing is often used to detect the performance and working status of automotive injectors. Through testing, the injection frequency, injection volume, and injection pattern of the injector can be evaluated to ensure that it can accurately supply fuel when the engine is running. There are 4 modes for injector testing:
👉Mode 1: One 250-millisecond positive electrode
👉Mode 2: Cycle positive for 7 milliseconds, negative for 20 milliseconds in 1.4 seconds
👉Mode 3: Cycle the positive electrode for 4 milliseconds and the negative electrode for 10 milliseconds in 1.4 seconds
👉Mode 4: Continuous output of positive pole for 7 milliseconds and negative pole for 20 milliseconds
➤Through injector testing, customers can bring the following conveniences:
👉Fault diagnosis: quickly identify injector problems, such as blockage, uneven injection amount, injector leakage, etc., to reduce troubleshooting time.
👉Performance optimization: ensure the normal operation of the injector, and improve engine efficiency and power output.
👉Cost savings: avoid unnecessary injector replacement and reduce repair and maintenance costs.

VDIAGTOOL V500 PRO MODE 2 Breaker Finder:
When the VDIAGTOOL V500PRO 2-in-1 Car Power Circuit Probe Kit Breaker Finder Tester switches to mode 2, it is equivalent to V210, with 3 test methods:
✔️Locate Open Circuits:
Open Wire Detector instantly detects and alerts you to open circuits. Easily locate short circuits, broken wires, open connections, current leaks, and trace wires. Transmitter and receiver LEDs indicate open or short circuit conditions.
✔️Wire Tracing:
Easy to use by just simply connecting the transmitter in series with the circuit or wire under test, (i.e.: in place of a blown fuse, across a connector, in series with an open wire, a light bulb socket, etc.), and scanning the circuit/wire with the tracers flexible probe to find the trouble spot.
✔️Check Short Circuits:
Automotive Short Circuit Finder allows you to identify intermittent circuit problems by flexing wires or connectors and listening for changes in the receiver tone. This automotive circuit finder has a 6.7-inch flexible probe that can help reach wires in congested places.

V500 PRO Wide Compatibility:
➤ Supports Car models:
✔️Support cars and SUVs
✔️Support trucks
✔️ Support motorcycles
✔️Support ships
✔️Bus
.........
➤ Wide measurement range:
👉Operating Voltage: 9V - 30V DC
👉Voltage Measurement Range: 2mV-100V
👉Resistance Measurement Range: 0-10MΩ
👉Current Measurement Range: 2mA-25A
👉Frequency Measurement Range: 10Hz-1000Khz
👉Waveform display: 10Hz-100Khz
👉Operating Temp: 0℃-50℃/32°F-122°F
👉Working Environment Temp: 0℃-50°C/-32°F-122°F
👉Storage Temp: - 20°℃-70°C/-4°F-158°F
➤ Supports 9 languages:
👍English
👍Chinese
👍French
👍Spanish
👍German
👍Russian
👍Italian
👍Portuguese
👍Polish

Packing List
- ✔️ V500 × 1
- ✔️ Breaker Finder × 1
- ✔️ Relay Test Cable × 1
- ✔️ Probe Tip × 1
- ✔️ Alligator Battery Clip × 1
- ✔️ Fine Probe Tip × 1
- ✔️ Type-C Data Cable × 1
- ✔️ Probe Tip Extension Cable × 1
- ✔️ User's Manual × 1
- ✔️ Wire Piercing Probe × 2
- ✔️ Banana to Banana Plug Test Lead × 2
- ✔️ Fuse × 3
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Description
Description
The VDIAGTOOL V500 Pro is an all-in-one circuit tester designed for comprehensive electrical diagnostics.
Key Features:
✔ Comprehensive Testing – Covers circuit breaker tests, voltage & resistance measurements, injector & relay testing, wire tracing, polarity checks, grounding tests, and more.
✔ Oscilloscope & Multimeter Mode – Provides accurate signal analysis for voltage, resistance, diode, current, and frequency measurements.
✔ 0-5V Power Supply – Aids in circuit debugging, sensor testing, and system calibration.
✔ Component Activation – Powers bulbs, fans, motors, relays, and other car parts for troubleshooting.
✔ 90° Rotating Screen – Ensures clear data visibility from any angle.
Perfect for automotive professionals and DIYers, the V500 Pro simplifies diagnostics, saving time and money.
Why is Vdiagtool V500pro the must-have tool for you?
Why is Vdiagtool V500pro the must-have tool for you?
The VDIAGTOOL V500Pro isn’t just another circuit tester—it's your secret weapon for fast, precise, and comprehensive diagnostics. Here's why it’s the must-have tool you didn't know you needed:
- Next-Level Diagnostics in One Tool: Forget juggling multiple gadgets! The V500Pro combines essential tools like a multimeter, oscilloscope, injector tester, and more—giving you powerful diagnostics in the palm of your hand. From testing voltage and current to oscilloscope mode for complex analysis, it’s the Swiss Army knife of automotive diagnostics.
- Instant Insights, Instant Action: Time is money, especially when troubleshooting electrical issues. The V500Pro displays voltage, resistance, current, and more all at once. This simultaneous data gives you a real-time snapshot of your electrical system, speeding up your diagnosis and allowing you to act faster.
- Precision for Professionals & DIYers: Whether you're activating components, testing short circuits, or checking positive/negative detection, the V500Pro is designed for accuracy and ease. And with its 0-5V power supply, you can tackle even the trickiest of tasks, making it the perfect tool for both professional technicians and DIY enthusiasts.
- Comprehensive Coverage for Every Need: The V500Pro goes beyond basic diagnostics with its relay protection tests and injector tests, ensuring that no problem goes undetected. It’s not just about identifying issues—it’s about providing detailed, actionable insights to solve them.
- Stay Ahead of the Curve: The V500Pro is built to evolve with the automotive world, offering advanced features that keep you prepared for future diagnostics. From complex electrical systems to everyday fixes, this tool is designed to adapt as your diagnostic needs grow.
The VDIAGTOOL V500Pro isn’t just a tool; it’s a game-changer. It’s the one investment that will transform your diagnostic process—whether you're a seasoned technician or an eager DIYer. Get yours today and experience the next level of automotive diagnostics.
Delivery and Shipping
Delivery and Shipping
- Tax Free
- 2 Year Warranty
- lifetime technical support.
- Money-back guarantee
- Free Shipping
- 2-5 Days Fast Shipping
FAQ
Can the V500Pro test all types of circuits in a vehicle?
Can the V500Pro test all types of circuits in a vehicle?
Yes! It is designed to diagnose a wide range of circuit issues, including short circuits, open circuits, and faulty components, ensuring comprehensive coverage for automotive electrical systems.
Can the V500Pro be used to test fuel injectors and relays?
Can the V500Pro be used to test fuel injectors and relays?
The Smart Test feature automatically detects voltage, resistance, and continuity, allowing for quick and accurate troubleshooting without manual adjustments.
Is the V500Pro suitable for beginners?
Is the V500Pro suitable for beginners?
Absolutely! While it offers professional-grade features, the user-friendly interface and automatic detection functions make it easy for both professionals and DIY users.
What’s included in the package?
What’s included in the package?
The V500PRO comes with a probe, user manual, power cables, and additional accessories to support various testing scenarios.