---
product_id: 384373620
title: "9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat"
brand: "topdiag"
price: "₩89714"
currency: KRW
in_stock: false
url: https://www.desertcart.kr/products/384373620-9-30v-car-circuit-tester-12v-24v-power-circuit-probe
store_origin: KR
region: South Korea
---

# 9-30V wide voltage range 320x240 DPI TFT color display 18A max continuous current 9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat

**Brand:** topdiag
**Price:** ₩89714
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Power Your Precision: The Ultimate Circuit Tester for the Modern Mechanic

## Quick Answers

- **What is this?** 9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat by topdiag
- **How much does it cost?** ₩89714 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/384373620-9-30v-car-circuit-tester-12v-24v-power-circuit-probe)

## 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

- • **Complete Kit for On-the-Go Pros:** Includes 6m test line, copper probes, relay connectors, and toolbox for ultimate convenience.
- • **Customizable Display & Online Upgrades:** Stay ahead with optional screen styles and seamless firmware updates.
- • **Pro-Grade Oscilloscope & Multimeter Combo:** Visualize and measure voltage, resistance, current, frequency with precision.
- • **All-in-One Automotive Diagnostic Powerhouse:** From relay to injector tests, get every circuit insight in one sleek kit.
- • **Smart Safety with Adjustable Circuit Breaker:** Protect your vehicle and device with intelligent overload control.

## Overview

The TopDiag P200 9-30V Car Circuit Tester is a professional-grade diagnostic tool designed for 12V and 24V automotive systems. Featuring a high-resolution 320x240 TFT color display, it combines multimeter, oscilloscope, relay, injector, and diode testing functions in one compact kit. With an adjustable 0-5V power supply, intelligent circuit breaker protection, and support for online firmware upgrades, it ensures accurate, safe, and up-to-date diagnostics for cars, trucks, motorcycles, and marine vehicles. The comprehensive accessory set and robust build make it ideal for professional mechanics and serious DIYers alike.

## Description

Main functions:  1. Intelligent identification of voltage / resistance 2. Multimeter mode (measuring voltage, resistance, diode, on-off, current and frequency) 3. Relay test 4. Injector test 5. Diode test 6. Oscilloscope function 7.0-5v adjustable power supply  8. Vehicle component activation  9. Positive and negative polarity test 10 intelligent circuit breaker protection (overload adjustable) 11. Screen style and background are optional 12. Online network upgrade Product specifications and parameters:  ① Display screen: (320 * 240 DPI) TFT true color display screen  ② Operating temperature: 0 - 60 ° C (32 - 140 f °) ③ Storage temperature: 40 - 70 ° C (- 40 - 185 f °) ④ External power supply: 12V or 24V, powered by battery ⑤ Working voltage: 9v-30v  ⑥ Measuring voltage: 10.1v-50v  ⑦ Resistance measurement range: 1 ohm ~ 200K ohm ⑧ Current measurement range: 0 ~ 18a ⑨ Maximum continuous current: 18a Product packing list  <1. Black cat test host 6 meters long test line <2. All copper probe <3. Double pass test connector  4. Private model alligator clip battery connecting line 5. Relay test line 6. Probe adapter 7. 25amp fuse  8. Operation instructions  9. Product toolbox Weight: 2.6kg  Size: 38.5 * 29.2 * 10.7 cm

## Features

- 🚘Main functions of automobile circuit test: 1. Intelligent recognition of voltage and resistance 2. Relay test 3. Injector test 4. Multimeter mode (measure voltage, resistance, diode, on-off, current, frequency) 5. Oscilloscope function 6. (0- 5V) Adjustable power supply 7. Vehicle component activation 8. Positive and negative polarity test 9. Intelligent circuit breaker protection (overload adjustable) 10 screen film style background optional 11. Online upgrade
- 🚘Product specifications and parameters: ① Operating temperature: 0 - 60 ° C (32 - 140 f °) ② Storage temperature: 40 - 70 ° C (- 40 - 185 f °) ③ External power supply: 12V or 24V, powered by battery ④ Minimum working voltage: 9V -- 30V ⑤ Maximum measured voltage: 0.1V -- 150V ⑥ Resistance measurement range: 1 ohm ~ 200K ohm ⑦ Measuring current range: 0 ~ 18a ⑧ Maximum continuous current: 18a
- 🚘Product list: ① test host 6m long test line ② All copper probe ③ Double pass test connector ④ Crocodile clip battery connector ⑤ Relay test line ⑥ Probe adapter ⑦ 25amp fuse ⑧ Operation instruction ⑨ Product toolbox
- 🚘Size and weight: Weight: 2.6kg Size: 38.5 * 29.2 * 10.7 cm
- 🚘About service: extensive application, professional diagnosis, support multi language. If you have any questions about Auto series and communication protocol, please email us and we will reply to you within 24 hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TopDiag |
| Power Source | Battery Powered |
| Colour | black red |
| Item Weight | 1200 Grams |
| Item dimensions L x W x H | 38.5 x 29.2 x 10.7 Centimeters |
| Min. Operating Voltage | 9 Volts |
| Specification Met | CE |
| Measurement Type | Multimeter |
| Maximum Operating Voltage | 30 Volts |
| UPC | 791734860403 |
| Manufacturer | TopDiag |
| Model number | P200 |
| Item Weight | 1 kg 200 g |
| Product Dimensions | 38.5 x 29.2 x 10.7 cm; 1.2 kg |
| Item model number | P200 |
| Item Height | 10.7 Centimeters |
| Item Width | 29.2 Centimeters |
| AC Adapter Current | 18 Amps |
| Are batteries included? | No |

## Product Details

- **Brand:** TopDiag
- **Power Source:** Battery Powered
- **Colour:** black red
- **Item Weight:** 1200 Grams
- **Item dimensions L x W x H:** 38.5 x 29.2 x 10.7 Centimeters

## Images

![9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat - Image 1](https://m.media-amazon.com/images/I/61N71UoS0XL.jpg)
![9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat - Image 2](https://m.media-amazon.com/images/I/71wEeQLplNL.jpg)
![9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat - Image 3](https://m.media-amazon.com/images/I/71tG6DLXTcL.jpg)
![9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat - Image 4](https://m.media-amazon.com/images/I/81OYzchI6lL.jpg)
![9-30v Car Circuit Tester 12V 24V Power Circuit Probe Kit Automobile Relay TesterDigital Multimeter Oscilloscope&Injector Test Tool Diode Tester Voltage Detector for Truck Marine Motorcycle Boat - Image 5](https://m.media-amazon.com/images/I/717j-r0K8QL.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 South Korea*
*Store origin: KR*
*Last updated: 2026-01-24*