---
product_id: 81113482
title: "JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe"
brand: "jastind"
price: "£21.95"
currency: GBP
in_stock: true
reviews_count: 8
category: "Jastind"
url: https://www.desertcart.co.uk/products/81113482-jastind-premium-3-48v-dc-digital-lcd-display-test-light
store_origin: GB
region: United Kingdom
---

# 3-48V wide voltage range ±0.2V high accuracy 140-inch flexible PU spring wire JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe

**Brand:** jastind
**Price:** £21.95
**Availability:** ✅ In Stock

## Summary

> 🔧 Illuminate your diagnostics with precision and power!

## Quick Answers

- **What is this?** JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe by jastind
- **How much does it cost?** £21.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/81113482-jastind-premium-3-48v-dc-digital-lcd-display-test-light)

## 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

- • **Lifetime Confidence:** Backed by JASTIND’s lifetime quality support—invest once, test forever with peace of mind.
- • **Durable & Safe Design:** Premium acetate fiber body with insulated rubber tip and sharp stainless steel probe for safe, reliable piercing.
- • **Precision Voltage Insight:** Ultra-clear LCD backlight display with 0.1V resolution ensures you never miss a detail, day or night.
- • **Extended Reach & Convenience:** 140-inch PU spring wire with large alligator clip enables effortless one-hand operation in tight spaces.
- • **Versatile Voltage Compatibility:** Tests 3-48V DC circuits, perfect for automotive, household, and professional electrical diagnostics.

## Overview

The JASTIND LCD Digital Display Test Light is a professional-grade 3-48V DC voltage tester featuring a sharp stainless steel probe, a highly accurate ±0.2V backlit LCD display, and a durable 140-inch PU spring wire with a large alligator clip. Designed for automotive and household electrical circuit testing, it offers safe, precise, and convenient diagnostics backed by lifetime product support.

## Description

Product description JASTIND Heavy Duty 3-48V Backlit Digital LCD Circuit Tester Why choose this? 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. Digital Test Light Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe Measuring Range: DC 3-48v Resolution Ratio: .1V Voltage Acuuracy: ±0.2V Display: LCD digital display Probe: Sharp Stainless steel Test Wire: Maximum 140 Inch Easy and must have tool Voltage Testing Used to test battery and automotive circuits voltage, when use this test light, do connect the Alligator Clip to the ground. Circuit Testing Connect the alligator clip to the ground, use the probe to touch wires or fuse to diagnose short circuit or defective fuse. Backlight Display LCD digital display with white backlight, easy read and convenient to use in the dim light. Heavy duty acetate fiber body Constructed with acetate fiber, high toughness and shatter-proof. Sharp stainless steel probe Made with sharp stainless steel probe for piercing wires, for hard to reach areas. Large alligator clip Large size alligator clip for easy and one hand operation. Extended spring cord Portable 140 In long enough PU spring wire for easy operation.

Review: Good quality, works well, accurate voltage display - Used to trace a loose/disconnected ground on my Range Rover, which has been extremely elusive up till now! This light tester worked exactly as described, seems to be good quality overall, and was easy to use. The cord is long enough to get pretty much anywhere I'd need it, but coils up well so it's not just in the way. I compared the voltage display across the battery terminals and across a couple of circuit points to what my multimeter was showing, and it was exactly the same. Overall very pleased with this purchase, especially for the price.
Review: Impressive quality - Highly recommend this test light for a several reasons. The overall quality is excellent. Doesn’t feel like it’s gonna break if I set it down too hard. The digital display on it is so much better than ordinary test lights that only have a cheap flashlight bulb in them. The Large, bold, clean cut numbers that it displays are Easy to read day or night and appear impressively fast. The cord is much longer than any I’ve used before and the clamp is bigger as well giving more options to connect to. I feel like I got way more than my money’s worth and will most definitely be buying more

## 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 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.
- [Long Time Quality Support] If you are looking for a durable circuit testing tool, this one is for you. Jastind always stand behind all of items with lifetime product quality and satisfied customer support, just buy with confidence!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F2GWNRV |
| Best Sellers Rank | #268,235 in Automotive ( See Top 100 in Automotive ) #202 in Battery Testers |
| Brand | JASTIND |
| Brand Name | JASTIND |
| Color | Clear, White |
| Customer Reviews | 4.6 out of 5 stars 2,967 Reviews |
| Item Dimensions | 13 x 4 x 1.5 inches |
| Item Weight | 0.22 Kilograms |
| Item dimensions L x W x H | 13 x 4 x 1.5 inches |
| Manufacturer | JASTIND |
| Maximum Operating Voltage | 48 Volts (DC) |
| Measurement Type | Voltage DC |
| Minimum Operating Voltage | 2.6 Volts (DC) |
| Model | JTCVT-01B |
| Part Number | JTCVT-01B |
| Power Source | Battery Powered |
| Specification Met | Ul, Nist Traceable |
| Style | Voltage Tester |
| Style Name | Voltage Tester |
| UPC | 682698800058 |
| Upper Temperature Rating | 140 Degrees Fahrenheit |

## Product Details

- **Brand:** JASTIND
- **Power Source:** Battery Powered
- **Style:** Voltage Tester
- **Color:** Clear, White
- **Item Weight:** 0.22 Kilograms

## Images

![JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe - Image 1](https://m.media-amazon.com/images/I/61C7EHxCINL.jpg)
![JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe - Image 2](https://m.media-amazon.com/images/I/61vaKn+DhLL.jpg)
![JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe - Image 3](https://m.media-amazon.com/images/I/61aiqeVAlCL.jpg)
![JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe - Image 4](https://m.media-amazon.com/images/I/61tmKpRhmwL.jpg)
![JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe - Image 5](https://m.media-amazon.com/images/I/61gSxP2JIGL.jpg)

## Questions & Answers

**Q: Can you ground these to anything like your truck? A bolt ect**
A: Yes. Any metal that is attached to the frame. It should be cleaned with sandpaper or a wire brush first before you attempt to ground it.

**Q: Will this work well on positive ground 6 volt vehicles on do you have a netter tool**
A: If you can hold the prong on the “positive ground” and somehow make a contact from an alligator clip to the wire you are trying to test... then yes. But definitely that’s a huge flaw of that device.

**Q: Does the screen update quick enough to read codes with obd1? the obd1 flashes power to the tester will it register the "flash"?**
A: It’s not designed for that

**Q: I purchased several test light assemblies, I am looking for the replacement electrical mechanism.**
A: This one is very nice.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality, works well, accurate voltage display
*by M***C on March 13, 2020*

Used to trace a loose/disconnected ground on my Range Rover, which has been extremely elusive up till now! This light tester worked exactly as described, seems to be good quality overall, and was easy to use. The cord is long enough to get pretty much anywhere I'd need it, but coils up well so it's not just in the way. I compared the voltage display across the battery terminals and across a couple of circuit points to what my multimeter was showing, and it was exactly the same. Overall very pleased with this purchase, especially for the price.

### ⭐⭐⭐⭐⭐ Impressive quality
*by D***L on March 21, 2021*

Highly recommend this test light for a several reasons. The overall quality is excellent. Doesn’t feel like it’s gonna break if I set it down too hard. The digital display on it is so much better than ordinary test lights that only have a cheap flashlight bulb in them. The Large, bold, clean cut numbers that it displays are Easy to read day or night and appear impressively fast. The cord is much longer than any I’ve used before and the clamp is bigger as well giving more options to connect to. I feel like I got way more than my money’s worth and will most definitely be buying more

### ⭐⭐⭐⭐⭐ Awesome in every way. A must have.well built !
*by D***S on January 26, 2021*

This test light is great! The feel of it the build is strong. It has a nice cord and clip and a sharp point all that and a digital display with a back light. And also where the wire comes out of the top of the unit it has a nice plastic wire support to prevent kinking and over bending of the wire. Overall an awesome product that works great!! Thanks.

## Frequently Bought Together

- JASTIND Premium 3-48V DC Digital LCD Display Test Light with 140 Inch Extended Spring Wire, Car Truck Vehicles Low Voltage Tester, Automotive Circuit Tester with Sharp Stainless Probe
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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-16*