---
product_id: 317279071
title: "TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode"
brand: "topdiag"
price: "$411"
currency: NZD
in_stock: true
reviews_count: 13
category: "Top Diag"
url: https://www.desertcart.nz/products/317279071-topdiag-p200-power-circuit-probe-kit-automotive-circuit-tester-2024
store_origin: NZ
region: New Zealand
---

# 9~30V voltage range Multimeter + Oscilloscope combo 20ft extension cable for reach TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode

**Brand:** topdiag
**Price:** $411
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose like a pro, fix like a boss—never get stranded again!

## Quick Answers

- **What is this?** TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode by topdiag
- **How much does it cost?** $411 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/317279071-topdiag-p200-power-circuit-probe-kit-automotive-circuit-tester-2024)

## Best For

- topdiag enthusiasts

## Why This Product

- Trusted topdiag brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Activate & Test On-Demand:** Apply power or ground directly to components—lights, motors, solenoids—without extra tools.
- • **Fuel Injector Cleaning Pulse:** 4 pulse signal modes to maximize injector cleaning efficiency and engine performance.
- • **Next-Level Precision & Insight:** Multimeter and oscilloscope modes deliver waveform and frequency data for pro-grade diagnostics.
- • **All-in-One Diagnostic Powerhouse:** 15+ automotive tests including relay, injector, and continuity—your ultimate troubleshooting sidekick.
- • **Smart Auto-Range & Intuitive Display:** Instant auto-detection of voltage, resistance, polarity with clear HD LCD prompts—no guesswork.

## Overview

The TopDiag P200 Power Circuit Probe Kit is a versatile automotive diagnostic tool featuring a 9~30V voltage range, integrated multimeter and oscilloscope modes, and a 20ft extension cable. It supports over 15 diagnostic functions including relay testing, fuel injector cleaning, and component activation. With smart auto-ranging, HD LCD display, and 18 language options plus online firmware updates, it’s designed for professional mechanics and DIYers seeking fast, reliable electrical troubleshooting.

## Description

TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode: desertcart.com: Industrial & Scientific

Review: Fast Diagnostic Tool - First Impression - Easy to use. The bright color is easy to find in my toolbox. This tool streamlines electrical troubleshooting on the fleet I maintain. This works on tractors, trucks, trailers and agricultural implements. Any 12-24v DC system I take it to. On mine the tip will heat up until it glows when you power something, so be careful how long you hold the power button. I use it momentarily with no problems. The beeps and buzzers are impossible to ignore because they are bright and loud. That makes this tool safer IMO. There is no internal battery, which makes it even safer, and simple to maintain. The wires are long enough to reach the tail lights on almost anything. I really like it. It's intuitive, fast, brightly colored, and makes me look like I know what I'm doing even when I really don't.
Review: Works great and very cheap - Works great as a power probe! Wire length is very long. Easy to use hook up ground and test or send 12 volts to what you’re needing to test.

## Features

- 💪【15+ Diagnostic Car Services for Automotive System】Multiple functions - almost covering the probe tools on the market. With ✅Multimeter function, ✅Oscilloscope mode, ✅Continuity testing, ✅Relay test, ✅Activating components in your hand, ✅Power supply/ground detecting/open & short testing, ✅Trailer lights testing, ✅Signal circuit testing, ✅Checking for Bad Ground Contacts, ✅Clean the Injectors, ✅20FT extension cable & LED light,✅ AC/DC voltage/resistance/diode/frequency testing.
- 💪【Multimeter & Oscilloscope Tester】The P200 Circuit tester will be the more versatile and powerful Power Circuit Probe Kit you've ever seen. Contains the multimeter's DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP) and frequency test functions, combined with the unique oscilloscope function and buzzer, can test components according to voltage, resistance value, frequency duty cycle, and waveform diagrams to quickly diagnose problems with your circuit system.
- 💪【Activating Electrical Components】Being able to ap-ply battery power or ground right to the probe tip gives you the ability to activate and dynamically test electrical components such as lights, motors and solenoids.
- 💪【Smart Test & Positive & Negative Test】When connected to the probe of Car Electrical Test Tool to measure voltage, resistance, positive/negative polarity, it will automatically become an instant auto-range, intelligent judgment does not require manual selection, and the corresponding parameter values and prompts are displayed on the HD LCD screen. With a 20ft cable, you can quickly assist you in diagnosing the car's condition without opening the wiring.
- 💪【Clean the fuel injector】It is extremely important to regularly test the fuel injector. P200 provides 4 types of pulse signals (once or multiple times) combined with car cleaner to achieve maximum cleaning effect.
- 💪【Relay Test】There’s nothing worse getting stuck on the trail at night because your light relay burnt out, losing your radio in the middle of a road trip, or not being able to finish your project because you’re short one small relay. With our P200 relay test, fix your lights on the fly, and keep the road trip rocking all night long.
- 💪【Widely Application】The Topdiag P200 is essential for a range of automotive diagnostic scenarios, whether you're a professional mechanic troubleshooting complex vehicle issues or a DIY enthusiast performing routine maintenance tasks. With its versatile capabilities, it's perfect for diagnosing electrical problems, testing relays, analyzing fuel injectors, activating components, and even utilizing oscilloscope mode for advanced troubleshooting. It's a must-have tool for anyone working on automotive electrical systems
- 💪【18 Languages & Firmware Upgrade】You can choose from 18 languages.You can easily use a USB data cable to connect Circuit tester automotive to a computer to perform an online upgrade program.
- 💪【1-YEAR WARRANTY, PERFECT SERVICE】 Topdiag Car circuit tester provides 1-year warranty, and supports 30 days no reason to return. If you encounter any issues during the product update, please contact me immediately. We offer 24/7 online technical support to assist you. E MAIL: jihaotech @ outlook . com

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0912YBNQP |
| Best Sellers Rank | #9,401 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Circuit Testers |
| Brand | TopDiag |
| Color | Multicolored |
| Date First Available | March 25, 2021 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.65 pounds |
| Item dimensions L x W x H | 15.16 x 11.5 x 4.21 inches |
| Item model number | P200 |
| Manufacturer | TopDiag |
| Maximum Operating Voltage | 30 Volts |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 9 Volts |
| Power Source | Ac,dc |
| Product Dimensions | 15.16 x 11.5 x 4.21 inches |
| Style | P200 |
| UPC | 791734860403 |
| Upper Temperature Rating | 60 Degrees Celsius |

## Product Details

- **Brand:** TopDiag
- **Color:** Multicolored
- **Item Weight:** 1200 Grams
- **Power Source:** Ac,dc
- **Style:** P200

## Images

![TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 1](https://m.media-amazon.com/images/I/415+xlUydnL.jpg)
![TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 2](https://m.media-amazon.com/images/I/512y38UlccL.jpg)
![TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 3](https://m.media-amazon.com/images/I/5166VyyYJzL.jpg)
![TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 4](https://m.media-amazon.com/images/I/51EfyclV0jL.jpg)
![TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 5](https://m.media-amazon.com/images/I/51ntW+ORTmL.jpg)

## Questions & Answers

**Q: does it check house current?**
A: This is for DC current tests only which uses batteries such as boats , riding mowers and automobiles. It will do both 12 and 24 volt systems. Does not work with AC voltage or current in homes

**Q: Can you check for voltage by just holding the probe against a wire or do you have to pierce the insulation on the wire?**
A: You have to pierce the wire. I suggest if you do, dab a bit of silicone sealant to the hole to keep out moisture and avoid corrosion. I would also suggest getting the back probe set to avoid piercing wires if that is a concern.

**Q: Does the colour of the tool refer to any differences?**
A: The picture is the real color, and the product is taken in kind

**Q: Does this come with extension cable?**
A: If you are working on trailers or the like you will need to purchase the extension. However the cord it comes with should be long (20FT) enough to work on any part of a car or light truck that you need to access.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast Diagnostic Tool
*by E***D on October 3, 2025*

First Impression - Easy to use. The bright color is easy to find in my toolbox. This tool streamlines electrical troubleshooting on the fleet I maintain. This works on tractors, trucks, trailers and agricultural implements. Any 12-24v DC system I take it to. On mine the tip will heat up until it glows when you power something, so be careful how long you hold the power button. I use it momentarily with no problems. The beeps and buzzers are impossible to ignore because they are bright and loud. That makes this tool safer IMO. There is no internal battery, which makes it even safer, and simple to maintain. The wires are long enough to reach the tail lights on almost anything. I really like it. It's intuitive, fast, brightly colored, and makes me look like I know what I'm doing even when I really don't.

### ⭐⭐⭐⭐⭐ Works great and very cheap
*by B***G on January 5, 2026*

Works great as a power probe! Wire length is very long. Easy to use hook up ground and test or send 12 volts to what you’re needing to test.

### ⭐⭐⭐⭐⭐ Definitely faster and improves your diagnostic capabilities
*by B***T on December 26, 2025*

Good quality works well highly recommend I use it for diagnosing issues in electrical problems on my vehicle vehicles

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-24*