---
product_id: 741294343
title: "TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50)"
brand: "topdiag"
price: "229706426₫"
currency: VND
in_stock: true
category: "Top Diag"
url: https://www.desertcart.vn/products/741294343-topdiag-p50-automotive-circuit-tester-12v-24v-power-circuit-probe
store_origin: VN
region: Vietnam
---

# 12V/24V dual voltage range 5W valve load for real-time circuit diagnostics LED polarity indicator for instant power source ID TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50)

**Brand:** topdiag
**Price:** 229706426₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Diagnose Like a Pro, Drive with Confidence!

## Quick Answers

- **What is this?** TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) by topdiag
- **How much does it cost?** 229706426₫ 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/741294343-topdiag-p50-automotive-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

- • **Dual Voltage Mastery:** Seamlessly test both 12V and 24V automotive systems without switching tools.
- • **Direct Load Simulation:** Probe and clip design enables hands-on load simulation to diagnose malfunctions faster.
- • **Real-Time Load Testing:** Utilize a 5W valve load to instantly reveal hidden circuit faults through bulb brightness.
- • **Precision Voltage Insight:** Combine load voltage measurement with digital readout for pinpoint diagnostics.
- • **Instant Polarity Recognition:** Red and blue LEDs clearly identify positive and negative poles, eliminating guesswork.

## Overview

The TopDiag P50 is a compact, lightweight automotive circuit tester designed for 12V and 24V systems. Featuring a 5W valve load for accurate fault detection, digital voltage measurement, and LED polarity indicators, it empowers professionals and enthusiasts to quickly diagnose electrical issues with precision and ease.

## Description

desertcart.co.jp: TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) : Automotive

## Features

- Voltage measurement function: The voltage measurement function is used in the same way as the measurement of a multimeter
- Valve load measurement: Uses a 5W car valve as a load. Through the bulb brightness, you can quickly determine the electrical power failure. Compared to diode testers, it can display hidden failures such as circuit contact failure or excessive resistance
- Valve load voltage measurement: It measures the bulb brightness of the electrical pen, and is linked with the voltage meter function of the electric pen, allowing for a more accurate voltage measurement. This improves the ability to diagnostic malfunction
- The load plug uses a probe connected directly to the clip and can be used in conjunction with the probe of the electrical test pen to perform a direct load simulation measurement. It is useful for diagnosis malfunction
- Voltage Pole Display Function: Quickly distinguish positive and negative power source via red and blue LEDs. Voltage polarity display function: Quickly distinguish positive and negative power source via red and blue LEDs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CG66T4ZW |
| Amazon Bestseller | #319,673 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4,265 in Voltage Testers |
| Brand | TopDiag |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | September 10, 2023 |
| Item Dimensions L x W x H | 12.4 x 3.5 x 5 cm |
| Item Weight | 100 g |
| Item model number | b7689669-1ce3-499d-8cd6-c04e9008b181 |
| Manufacturer | JDiag Electronics Technology Co.,Ltd |
| Product Dimensions | 12.4 x 3.48 x 4.95 cm; 100 g |
| Warranty | Warranty Period: 45 Days |

## Product Details

- **Brand:** TopDiag
- **Item Weight:** 0.1 Kilograms
- **Item dimensions L x W x H:** 12.4 x 3.5 x 5 cm
- **Manufacturer:** JDiag Electronics Technology Co.,Ltd

## Images

![TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) - Image 1](https://m.media-amazon.com/images/I/61D58J5lv9L.jpg)
![TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) - Image 2](https://m.media-amazon.com/images/I/61i73-nw3mL.jpg)
![TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) - Image 3](https://m.media-amazon.com/images/I/61sde6WLotL.jpg)
![TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) - Image 4](https://m.media-amazon.com/images/I/712Qk-RZbiL.jpg)
![TopDiag P50 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Automotive Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P50) - Image 5](https://m.media-amazon.com/images/I/718vFYrDXBL.jpg)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-13*