---
product_id: 253064040
title: "Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe"
brand: "jastind"
price: "289.39 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Jastind"
url: https://www.desertcart.tn/products/253064040-heavy-duty-3-48v-backlit-digital-lcd-circuit-tester-test
store_origin: TN
region: Tunisia
---

# 3-48V wide voltage range ±0.2V high accuracy digital readout 140-inch flexible PU spring wire Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe

**Brand:** jastind
**Price:** 289.39 DT
**Availability:** ✅ In Stock

## Summary

> 🔧 Power up your diagnostics with precision and reach!

## Quick Answers

- **What is this?** Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe by jastind
- **How much does it cost?** 289.39 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/253064040-heavy-duty-3-48v-backlit-digital-lcd-circuit-tester-test)

## Best For

- jastind enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Safe Design:** Built tough with acetate fiber housing and a sharp stainless steel probe, plus insulated tips for shock protection—engineered for longevity and safety.
- • **Precision Voltage Insight:** Experience ultra-clear .1V resolution on a vibrant blue backlit LCD, ensuring you never miss a detail—even in low light.
- • **Trusted Professional Grade:** Join thousands of satisfied users who rely on this heavy-duty tester for accurate diagnostics—backed by a 100% quality guarantee.
- • **Versatile Vehicle Compatibility:** Test everything from car headlights to fuse circuits effortlessly with a broad 3-48V DC range tailored for automotive pros and DIYers alike.
- • **Extended Reach, One-Handed Control:** 140-inch coiled PU spring wire paired with a large alligator clip lets you maneuver in tight spaces with ease and confidence.

## Overview

The Jastind Heavy Duty 3-48V Backlit Digital LCD Circuit Tester is a professional-grade automotive tool designed for accurate low voltage testing across a wide 3-48V DC range. Featuring a sharp stainless steel probe, a durable acetate fiber body, and a 140-inch flexible PU spring wire, it delivers precise ±0.2V readings on a clear blue backlit display. Ideal for automotive engineers and DIY enthusiasts, this tester combines safety, durability, and extended reach for efficient circuit diagnostics.

## Description

Jastind professional digital Circuit 3-48V DC Tester designed for car electrical circuits, automotive battery, battery charging systems, ignition systems, which is a must have tool for any automotive engineer, electronic engineer or circuits DIY. *3-48v widely use for circuits test. *.1 Accuracy voltage reading on Blue Backlit digital display. *.Made with sharp stainless steel probe for piercing wires, for hard to reach areas. *.Portable 140 In long enough PU spring wire for easy operation. *.Constructed with acetate fiber, high toughness and shatter-proof. Please Note This is a negative mode one-way current circuit tester,when do measuring please attach the clamp to the grounding or negative pole.

Review: Es muy bueno pero nada más mide pura corriente no detecta tierra
Review: I recently got a 12V test light for checking fuses and electrical circuits, and it has been a really handy tool. It makes it super easy to quickly see if a fuse is getting power without having to guess or pull everything apart. What I really like is how simple and effective it is. You just touch the fuse or circuit, and it clearly shows whether there’s voltage present. It saves a lot of time when diagnosing electrical issues, especially in a truck or car. The build feels solid for a basic diagnostic tool, and the probe is sharp enough to get a good connection without being difficult to use. It’s also compact, so I can keep it in my toolbox or glove compartment without it taking up space. Overall, this is a must have tool if you work on vehicles or just want to quickly check electrical problems. Simple, reliable, and very useful for everyday diagnostics.

## Features

- 【Wide testing range & Voltage Polarity Testing】3-48v low DC volt circuit test light, designed for checking various vehicles’ electrical circuits, such as automotive headlights, taillights, faulty sockets, fuse, also for testing other 3-48V DC wiring and circuits. This is also a bidirectional voltage tester with volt polarity indicating, you can attach the alligator clamp either to ground or positive. A must have tool no matter for business or household use, will serve you faithfully for years.
- 【Computer Safe & Backlight Digital Display Part】Heavy Duty circuit light tester with highly clear LCD digital blue backlight display screen, resolution to .1V voltage reading with high accuracy to ±0.2V, clear&visible digital readouts for day and night. Jastind test light draws much less current than the incandescent lamp, which is less likely to damage sensitive circuits.
- 【Quality Made Tester Body】Professional automotive circuit tester with premium acetate fiber body, allows for more toughness and durability. Sharp stainless steel probe for piercing wires effortlessly, also for hard to reach tight areas. Along with insulation protective rubber tip to against electric shock.
- 【Extended PU Spring & Large Alligator Clip】High quality 140 inch long enough PU spring wire offers more flexibility, lighter and more durable than normal cable wires, heat-insulation and oil resistance for daily use. Attach with large size alligator clip for easy one hand operation, also for convenient use and storage.
- 【100% Quality Guarantee】If you are looking for a durable circuit testing tool, this one is for you. We always stand behind our products, click "Add to Cart" with confidence today.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PX16XDX |
| Brand | JASTIND |
| Colour | Black Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (6,029) |
| Item Weight | 140 Grams |
| Manufacturer | JASTIND |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 3.8 |
| Model Number | 13 |
| Power Source | Battery Powered |
| Style Name | Compact |
| UPC | 682698800003 |

## Product Details

- **Brand:** JASTIND
- **Colour:** Black Red
- **Item weight:** 140 Grams
- **Power source:** Battery Powered
- **Style:** Compact

## Images

![Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - Image 1](https://m.media-amazon.com/images/I/71Xse13hFYL.jpg)
![Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - Image 2](https://m.media-amazon.com/images/I/81DLdiE5sVL.jpg)
![Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - Image 3](https://m.media-amazon.com/images/I/71FwyoUUEIL.jpg)
![Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - Image 4](https://m.media-amazon.com/images/I/71zNJVzpduL.jpg)
![Heavy Duty 3-48V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe - Image 5](https://m.media-amazon.com/images/I/517hMAOQ-yL.jpg)

## Questions & Answers

**Q: How can i exchange this item mine is not working**
A: Put it in the trash and leave feedback so other don't make the same mistake as we did.  I would never recommend this item to anyone!  Mine stopped working too, waste of money...

**Q: If i use this tool to check a 24v dc circuit how much current will it draw?  my goal is something around 1amp at 24 volts.**
A: It depends on what system you checking some starter systems drive to 160 A

**Q: Ho long does it take for display to indicate voltage?**
A: If your connected to a proper ground such as the negative post of the battery it should be immediately

**Q: Does the tester have a visible light?  I need to test pulsing ignition circuits and a digital meter alone would be too slow to react.**
A: It does not have a pulsing light. The digital readout lights up, then shows voltage. Although you could go off of the screen lighting up, but i'm not sure how accurate that would be.

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by L***E on 25 April 2022*

Es muy bueno pero nada más mide pura corriente no detecta tierra

### ⭐⭐⭐⭐⭐ Review
*by A***Y on 11 April 2026*

I recently got a 12V test light for checking fuses and electrical circuits, and it has been a really handy tool. It makes it super easy to quickly see if a fuse is getting power without having to guess or pull everything apart. What I really like is how simple and effective it is. You just touch the fuse or circuit, and it clearly shows whether there’s voltage present. It saves a lot of time when diagnosing electrical issues, especially in a truck or car. The build feels solid for a basic diagnostic tool, and the probe is sharp enough to get a good connection without being difficult to use. It’s also compact, so I can keep it in my toolbox or glove compartment without it taking up space. Overall, this is a must have tool if you work on vehicles or just want to quickly check electrical problems. Simple, reliable, and very useful for everyday diagnostics.

### ⭐ Review
*by B***U on 16 May 2023*

The circuit board is blown after testing on the car on first attempt

## Frequently Bought Together

- Heavy Duty 3-65V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe
- JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro Fuse + 1 Puller – for Car/RV/Truck/Motorcycle(2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A)
- Premium LED Bulb Automotive Circuit Tester, 6-24V Test Light with 135 Inch PU Extended Spring Wire, Sharp Hard Steel Probe Vehicle Circuits Low DC Voltage Light Tester

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-09*