---
product_id: 317279071
title: "TopDiag P200 Power Circuit Probe Kit - Circuit Breaker Finder, Automotive Circuit Tester, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode"
brand: "topdiag"
price: "$356.51"
currency: USD
in_stock: true
category: "Top Diag"
url: https://www.desertcart.us/products/317279071-topdiag-p200-power-circuit-probe-kit-circuit-breaker-finder-automotive
store_origin: US
region: United States of America
---

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

**Brand:** topdiag
**Price:** $356.51
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose, Activate, Dominate: The Ultimate Circuit Probe for Millennial Mechanics

## Quick Answers

- **What is this?** TopDiag P200 Power Circuit Probe Kit - Circuit Breaker Finder, Automotive Circuit Tester, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode by topdiag
- **How much does it cost?** $356.51 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/317279071-topdiag-p200-power-circuit-probe-kit-circuit-breaker-finder-automotive)

## 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

- • **Trail-Ready Relay Tester:** Fix burnt-out relays instantly and never miss a beat on your road trip or project.
- • **Activate & Test on the Fly:** Power up components directly from the probe—lights, motors, solenoids—no extra tools needed.
- • **Fuel Injector Pulse Cleaning:** Four pulse modes to supercharge injector cleaning and keep your engine running flawless.
- • **All-in-One Diagnostic Powerhouse:** 20+ automotive tests in one sleek kit—be the go-to pro for any electrical challenge.
- • **Precision Multimeter & Oscilloscope:** Instant auto-ranging with waveform analysis to decode complex circuit issues like a boss.

## Overview

The TopDiag P200 Power Circuit Probe Kit is a versatile automotive diagnostic tool combining a multimeter, oscilloscope, relay tester, and fuel injector cleaner in one. Supporting 9-30V systems with a 20ft cable and auto-ranging display, it empowers professionals and DIYers to quickly identify and fix electrical issues, activate components, and perform advanced waveform analysis. With 18 languages, firmware upgrades, and a 1-year warranty, it’s engineered for precision, convenience, and reliability.

## Description

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

## Features

- 💪【20+ Diagnostic Car Services for Automotive System】Multiple functions - almost covering the probe tools on the market. With ✅Circuit Breaker Finder, ✅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 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 | #17,134 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #32 in Circuit Testers |
| Brand Name | TopDiag |
| Color | Multicolored |
| Compatible Devices | Vehicles, Vehicle Electrical Systems |
| Customer Reviews | 4.5 4.5 out of 5 stars (552) |
| Included Components | 1* Circuit Tester 1* Carry Case 1* Power probe 2* Probe cable |
| Item Dimensions | 15.16 x 11.5 x 4.21 inches |
| Item Weight | 1200 g |
| Manufacturer | TopDiag |
| Maximum Operating Voltage | 30 volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 volts |
| Model | P200 |
| Number of Items | 1 |
| Part Number | P200 |
| Power Source | Ac,dc |
| Style Name | P200 |
| UPC | 791734860403 |
| Upper Temperature Rating | 60 °C |

## Product Details

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

## Images

![TopDiag P200 Power Circuit Probe Kit - Circuit Breaker Finder, Automotive Circuit Tester, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - Image 1](https://m.media-amazon.com/images/I/71kbS+3pOfL.jpg)

## Available Options

This product comes in different **Style** options.

## 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.

## Frequently Bought Together

- 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
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-14*