---
product_id: 320444881
title: "Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection"
brand: "duoyi"
price: "128.95 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Duoyi"
url: https://www.desertcart.tn/products/320444881-power-circuit-probe-tester-6v-24v-dc-test-light-automotive
store_origin: TN
region: Tunisia
---

# LED + buzzer alerts 13FT long cable 6-24V DC range Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection

**Brand:** duoyi
**Price:** 128.95 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Diagnose like a pro, fix like a boss!

## Quick Answers

- **What is this?** Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection by duoyi
- **How much does it cost?** 128.95 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/320444881-power-circuit-probe-tester-6v-24v-dc-test-light-automotive)

## Best For

- duoyi enthusiasts

## Why This Product

- Trusted duoyi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Reach Testing:** 13-foot cable lets you access hard-to-reach vehicle circuits without hassle—test anywhere with ease.
- • **Auto Reset & Fault Alerts:** Detect short circuits with audible warnings and automatic reset within seconds—never miss a fault or waste time.
- • **Smart Overload Protection:** Automatic current cutoff above 7A with buzzer alerts protects both you and your vehicle’s electrical system.
- • **Precision Polarity Detection:** Instantly identify positive (red) and negative (green) terminals with clear LED indicators for foolproof diagnostics.
- • **Component Activation & Continuity:** Activate and test components in or out of the vehicle, ensuring every relay, fuse, and diode is in perfect working order.

## Overview

The DUOYI Power Circuit Probe Tester is a professional-grade 6-24V DC automotive electrical tester featuring polarity identification, component activation, and continuity testing. Equipped with a 13-foot cable, LED and buzzer alerts, and smart overload protection, it streamlines vehicle electrical diagnostics with precision and safety. Ideal for millennial managers who demand efficiency and reliability in their toolkit, backed by a 3-year warranty.

## Description

Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection: desertcart.com: Tools & Home Improvement

Review: Works great and also has a positive supply for activating what you are testing - Great tester .
Review: great product - great product , works great and makes my life easier when tracing and testing electrical components

## Features

- 【Short Circuit Following and Locating Test Light】Power circuit probe tester is suitable for diagnostic in all 6V to 24V DC vehicle electrical systems. It can check switches, relays and the on-off of diodes, fuses and circuits, which can help you reduce diagnostic time in automotive electrical systems. In most cases, short circuit or instant overload of component will lead to blown fuse or circuit breaker tripping. Car test light can assist you tracing problem wires and locating breaking points.
- 【Polarity Identification & Continuity Testing & Jumper Lead Operation】This power circuit probe tester can help you quickly identify positive and negative polarity of electric cables and plugs of vehicles. When the probe tip contact to the positive electrode, the RED light on. When the probe tip contact to the negative electrode, the GREEN light on. This 12V tester can also test for continuity and do the jumper lead operation with the assistance of its auxiliary ground lead.
- 【Activate and Test Components In/Out of Vehicle’s Electrical System&Poor Ground Contact Testing】Power circuit probe tester can activate components in and out of vehicle’s electrical system, test and check the components if defective or not,or if rating current of component is higher than that of the automotive circuit tester. For some components,the negative terminal is required to be well grounded to cope with the flow of large currents, electrical tester is a good tool to test their grounding.
- 【13FT Long Extension Cable&LED Light Prompt&Buzzer Warning&Highly Sensitive Probe&Clips with Strong Bite】The cable length of the circuit tracer is 4m(13ft), which allows you access and test any electrical system easily.The LED indicator and buzzer warning can help you clear problems at a glance. Test light automotive adopts advanced high sensitivity probe, which provides you quick and accurate detection. Its clips with strong bite force which not easy to fall off, providing you better experience.
- 【Quick Self-Test & Overload Protection】Before you test a circuit or component, 12 volt tester can perform a quick self-test to ensure your tool is in good condition.Equipped with overload protection, when the current exceeds 7A, automotive circuit tester will disconnect the current automatically and give you a buzzer prompt.You can test poor ground contacts directly. Note: This electrical tester can not be used for 110/220V systems, it is only used for DC 6-24V systems. Do not use on AC voltage.
- 【Automatic Reset Test Light】When the circuit breaker trip is detected, the power circuit probe tester will sound a prompt to remind you that there is a short circuit problem. Then it will automatically reset within 3 to 5 seconds(the prompt sound will automatically turn off), so you can retest or go to test other places.
- 【Easy Operation Circuit Tester】Unroll the leads. Clamp the red clip of the power circuit probe tester to the positive terminal of the vehicle's battery. Clamp the black clip to the negative terminal of the vehicle's battery. After a simple hook-up of the circuit tracer to the vehicle's battery, automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward.
- 【3-Year Product Service】We aim at trying our best to offer you the best product and services to make you unworried before/after the purchase. We promise 3 years warranty. For quality problems caused by non-human damage, please feel free to contact us. We will provide free replacement power circuit probe tester after confirmation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094PZMBXY |
| Best Sellers Rank | #161,838 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #232 in Circuit Testers |
| Brand | DUOYI |
| Color | Clear, Green, RED, Red |
| Date First Available | May 12, 2021 |
| Item Weight | 10.2 ounces |
| Item dimensions L x W x H | 10.24 x 3.94 x 1.57 inches |
| Item model number | MMT211 |
| Manufacturer | DUOYI |
| Measurement Type | Electrical Tester |
| Min. Operating Voltage | 6 Volts |
| Power Source | Electric |
| Product Dimensions | 10.24 x 3.94 x 1.57 inches |
| Style | Circuit Testers |
| UPC | 758358919849 |

## Product Details

- **Brand:** DUOYI
- **Color:** Clear, Green, RED, Red
- **Item dimensions L x W x H:** 10.24 x 3.94 x 1.57 inches
- **Power Source:** Electric
- **Style:** Circuit Testers

## Images

![Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection - Image 1](https://m.media-amazon.com/images/I/61pImUaaqgL.jpg)

## Questions & Answers

**Q: Is it non-contact? Or does this tested wire have to be bare?**
A: The electric tester is contact type. The tested wires have to be bare.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great and also has a positive supply for activating what you are testing
*by F***T on December 22, 2025*

Great tester .

### ⭐⭐⭐⭐⭐ great product
*by B***G on May 5, 2025*

great product , works great and makes my life easier when tracing and testing electrical components

### ⭐⭐⭐⭐ Easy to use
*by D***M on October 30, 2025*

Easy to use and the wire length is long enough for anything you need it for

## Frequently Bought Together

- Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-22*