---
product_id: 543258270
title: "Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V"
brand: "topdiag"
price: "₨94355"
currency: LKR
in_stock: true
reviews_count: 11
category: "Top Diag"
url: https://www.desertcart.lk/products/543258270-topdiag-p200-power-circuit-probe-kit-test-light-automotive-circuit
store_origin: LK
region: Sri Lanka
---

# 9~30V wide voltage range Multimeter + Oscilloscope modes 0~5V adjustable power supply Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V

**Brand:** topdiag
**Price:** ₨94355
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose smarter, not harder — the ultimate power probe for pros on the go!

## Quick Answers

- **What is this?** Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V by topdiag
- **How much does it cost?** ₨94355 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/543258270-topdiag-p200-power-circuit-probe-kit-test-light-automotive-circuit)

## 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

- • **Smart Circuit Protection:** Built-in auto short-circuit & overload protection acts like a digital circuit breaker for safety.
- • **Rapid & Intelligent Testing:** Cut your diagnostic time with fast, accurate readings across 9V-30V automotive systems.
- • **All-in-One Diagnostic Powerhouse:** Combine multimeter, oscilloscope, relay & fuel injector testing in one sleek tool.
- • **Component Activation with Muscle:** Activate vehicle parts with up to 20A current using versatile MOMENT, LATCH & PULSE modes.
- • **Global Language Support & Universal Fit:** Supports 18+ languages and works seamlessly on cars, trucks, boats & motorcycles.

## Overview

The Topdiag P200 Power Circuit Probe Kit is a professional-grade automotive diagnostic tool that integrates multimeter, oscilloscope, relay tester, and fuel injector tester functions. Supporting 9V-30V systems, it features adjustable 0-5V power output, component activation up to 20A, and automatic circuit breaker protection. With multilingual support and compatibility across a wide range of vehicles, it accelerates troubleshooting with precision and safety.

## Description

Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V: desertcart.com: Tools & Home Improvement

Review: Helpful tool! - Helped diagnose starter issue old vs new starter, new starter found defective thanks to this tool. Very accurate! Pretty easy to use.
Review: Probe - Great tool with out spending a lot of money in the original brand highly recommended

## Features

- [P200 Power Circuit Probe Tool] Topdiag P200 probe tester can be used to test voltage, fuel injector, diode, continuity, polarity, etc, which is the only upgradeable power circuit tester on the market. It is a tool for quickly testing all 9V-30V electronic systems. The test time is greatly shortened, convenient, fast and intelligent!
- [Multimeter & Oscilloscope Mode] There are two powerful functions of P200 power circuit probe kit - one is the multimeter mode, which can quickly test DC voltage, resistance, continuity, diode, current and frequency; the other function is oscilloscope, which can quickly analyzes and diagnoses the problems of vehicles by display electrical waveforms on the screen.
- [Fuel Injector Testing] If the fuel injector is damaged, that will easily lead to engine idling instability, fuel consumption increase, cause engine shock. Also, Topdiag P200 power tester also a relay tester automotive kit, which will make it more convenient for the owner to check whether the fuel injector and other parts of the vehicle in a good condition regularly.
- [Component Activation Function] P200 circuit tester can activating components of vehicles, which is used to generate activation signals to the detected components, such as activating lights. There are two activation methods, positive activation and negative activation. The maximum current through activation can reach 20A, There are the three activation modes: MOMENT, LACH and PULSE.
- [0~5V Adjustable Power Supply] Togdiag P200 is a power circuit probe test kit for all cars, so it can adjust 0~5V output voltage to check the circuit connection and it is also useful to check the wiring to the ECU/ ECM, which can ensure the safety of the tested vehicles.
- [Positive & Negative Test] Use the P200 electric tester's probe to find the positive and negative of the power supply. If it is positive,the screen will display the probe voltage and the buzzer will alarm. If it is negative, the grounding icon is displayed on the screen.
- [Circuit Breaker & Overloaded Protection] With the function of automatic short-circuit protection and overloaded protection, you can think of the Topdiag P200 test probe as a digital circuit breaker finder, its internal circuit breaker will open circuit or trip automatically if it becomes overloaded.
- [Multiple Languages & Wide Application] Our P200 automotive power circuit probe tester support 18+ languages, such as English, Spanish, German, Polish, Russian, Vietnamese, Arabic, Italian, Portuguese, French, Korean, Japanese, Indonesian and Chinese, etc. Topdiag P200 electrical tester is compatible with all 9V-30V vehicle electrical systems - cars, excavators, trucks, boats and motorcycles, etc. If you have any suggestions or problems with our products, please feel free to let us know.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BYNLQX5P |
| Best Sellers Rank | #42,401 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #78 in Circuit Testers |
| Brand | TopDiag |
| Color | Black |
| Date First Available | March 16, 2023 |
| Department | Mens |
| Item Weight | 3.72 pounds |
| Item dimensions L x W x H | 12 x 4.33 x 9.25 inches |
| Item model number | P200 |
| Manufacturer | Topdiag |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 9 Volts |
| Power Source | Battery Powered |
| Product Dimensions | 12 x 4.33 x 9.25 inches |
| Specification Met | CE, ETL, NIST, UL |
| Style | P200 |
| UPC | 753955453673 |

## Product Details

- **Brand:** TopDiag
- **Color:** Black
- **Item dimensions L x W x H:** 12 x 4.33 x 9.25 inches
- **Power Source:** Battery Powered
- **Style:** P200

## Images

![Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V - Image 1](https://m.media-amazon.com/images/I/6183spsX-pL.jpg)
![Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V - Image 2](https://m.media-amazon.com/images/I/71+Zjxdh-mL.jpg)
![Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V - Image 3](https://m.media-amazon.com/images/I/71z6hp4BcSL.jpg)
![Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V - Image 4](https://m.media-amazon.com/images/I/71+ZXTzlHZL.jpg)
![Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V - Image 5](https://m.media-amazon.com/images/I/71373-OHZcL.jpg)

## Available Options

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

## Questions & Answers

**Q: What does the product include?**
A: Hi, the product includes a Topdiag P200, 2 battery clips, 3 probes, an user’s manual and 20ft extension cable.

**Q: How does it find a short circuit?**
A: Thanks for the inquiry, if you are tracing a short circuit in the brake light circuit, you will know that the wiring harness must pass through the wire at the door sill, locate the color-coded wire in the harness and expose it. While in Component Activation interface, select MOMENT mode. Use the probe tip to contact the marked wire. Press the "UP" button to trigger power supply.
If the circuit breaker tripped, you have verified the shorted wire. Cut the wire and power supply each end with probe tip again, follow the wire in the shorted direction and repeat this process until the short is located.

**Q: Can the house current be tested?**
A: Thanks for your inquiry, P200 is an electrical circuit tester which tests cars, minibus, SUV, pickup truck, motorcycle, Jeep, etc, can not be used to test the current in the house.

**Q: How to test trailer lights?**
A: Hi, thanks for your question! When the probe is in multimeter or SMART Test , connect the probe auxiliary ground lead to the trailer light, and insert the probe tip into the OBD socket to display the current voltage. With this method you can check the function and direction of the connector and trailer lights. If you find the trailer light connection correctly, you can use the "Component Activation" function to test whether the trailer light is working or not working.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Helpful tool!
*by K***1 on December 26, 2025*

Helped diagnose starter issue old vs new starter, new starter found defective thanks to this tool. Very accurate! Pretty easy to use.

### ⭐⭐⭐⭐⭐ Probe
*by M***N on February 9, 2026*

Great tool with out spending a lot of money in the original brand highly recommended

### ⭐⭐⭐⭐⭐ Great Tester
*by J***U on December 26, 2025*

Nice storage case, easy plug attachments, worked Great

## Frequently Bought Together

- Topdiag P200 Power Circuit Probe Kit - Advanced Automotive Electrical System Multimeter, Oscilloscope, Automotive Circuit Tester, Fuel Injector Activator, Short Circuit Finder - 9~30V
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- RUNCCI-YUN 15pcs back probe pins,Multimeter probe pins,Test Lead Back Probe Automotive Back Probe for Car Repairing and Laboratory Electric Multimeter Testing (Red Blue Black Yellow Green)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-01*