---
product_id: 352113068
title: "P200 Automotive Circuit Tester, (2022 Newest) 9v-30V Power Circuit Probe Kit with 0~5V Power Supply Fuel Injector Relay Mode, Car Electrical System Test Tool AC/DC Digital Voltage Short Finder"
brand: "topdiag"
price: "11195303₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/352113068-p200-automotive-circuit-tester-2022-newest-9v-30v-power-circuit
store_origin: VN
region: Vietnam
---

# 9V-30V wide voltage range 6m (20ft) extension cable 2.4-inch TFT LCD display P200 Automotive Circuit Tester, (2022 Newest) 9v-30V Power Circuit Probe Kit with 0~5V Power Supply Fuel Injector Relay Mode, Car Electrical System Test Tool AC/DC Digital Voltage Short Finder

**Brand:** topdiag
**Price:** 11195303₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose smarter, drive safer — the ultimate circuit tester for pros on the move!

## Quick Answers

- **What is this?** P200 Automotive Circuit Tester, (2022 Newest) 9v-30V Power Circuit Probe Kit with 0~5V Power Supply Fuel Injector Relay Mode, Car Electrical System Test Tool AC/DC Digital Voltage Short Finder by topdiag
- **How much does it cost?** 11195303₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/352113068-p200-automotive-circuit-tester-2022-newest-9v-30v-power-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

- • **Trail-Ready Relay Tester:** Fix burnt-out relays fast and keep your road trip alive—no more roadside breakdown FOMO.
- • **Activate & Test On-The-Go:** Directly power or ground components to dynamically test lights, motors, solenoids—no bench needed.
- • **Fuel Injector Pulse Cleaning:** 4 pulse signal modes optimize injector cleaning, extending engine life and performance.
- • **All-in-One Diagnostic Powerhouse:** 15+ automotive test modes including multimeter, oscilloscope & relay testing for total system mastery.
- • **Smart Auto-Range & Instant Readout:** Intelligent auto-ranging with clear HD display eliminates guesswork and speeds up diagnostics.

## Overview

The TopDiag P200 is a cutting-edge automotive circuit tester designed for 9V to 30V vehicle electrical systems. Featuring a 2.4-inch TFT LCD, 15+ diagnostic functions including multimeter, oscilloscope, relay test, and fuel injector cleaning pulses, it offers professional-grade accuracy and versatility. With a 6-meter extension cable and smart auto-ranging, it empowers mechanics and engineers to quickly identify and fix electrical issues, ensuring peak vehicle performance and reliability.

## Description

TopDiag P200 Automotive Circuit Tester, (2022 Newest) 9v-30V Power Circuit Probe Kit with 0~5V Power Supply Fuel Injector Relay Mode, Car Electrical System Test Tool AC/DC Digital Voltage Short Finder

## 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】P200 Circuit Tester is widely testing continuity, signal circuit, activating components in your hand and in the vehicle, finding bad ground and short circuits, test trailer lights. It's a fast and efficient electrical testing tool designed for the modern automotive technician, mechanic, engineer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TopDiag |
| Part number | P200 |
| Item Weight | 1.2 kg |
| Product Dimensions | 38.5 x 29.2 x 10.7 cm; 1.2 kg |
| Item model number | P200 |
| Size | Red-P200 |
| Colour | Red-P200 |
| Style | German |
| Material | Composite |
| Shape | Straight |
| Power source type | Battery Powered |
| Amperage Capacity | 18 Amps |
| Item Package Quantity | 1 |
| Temperature Range | 60 Degrees Celsius |
| Cord length | 6 Metres |
| Measurement Accuracy | 0.1~24 |
| Display style | TFT |
| Included components | 1* Circuit Tester 1* Carry Case 1* Power probe 2* Probe cable |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** TopDiag
- **Power source:** Battery Powered
- **Style:** German
- **Colour:** Red-P200
- **Item weight:** 1200 Grams

## Images

![P200 Automotive Circuit Tester, (2022 Newest) 9v-30V Power Circuit Probe Kit with 0~5V Power Supply Fuel Injector Relay Mode, Car Electrical System Test Tool AC/DC Digital Voltage Short Finder - Image 1](https://m.media-amazon.com/images/I/71S12LDw62L.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.

## 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
- WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display, Auto Circuit Tester with Voltmeter & Dual Color Polarity Indicate, Electric Test Pen w/Stainless Probe for Car/Truck/SUV Checker
- JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + Puller – Replacement for RV Camper Boat Truck (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-08*