---
product_id: 538081078
title: "Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery"
brand: "kaiweets"
price: "7590 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Kaiweets"
url: https://www.desertcart.is/products/538081078-smart-circuit-tester-0-8v-100v-dc-voltage-tester-backlight
store_origin: IS
region: Iceland
---

# 0.8-100V DC voltage range Bright green LED backlight display 3-year after-sales & lifetime support Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery

**Brand:** kaiweets
**Price:** 7590 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your diagnostics with precision and ease!

## Quick Answers

- **What is this?** Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery by kaiweets
- **How much does it cost?** 7590 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/538081078-smart-circuit-tester-0-8v-100v-dc-voltage-tester-backlight)

## Best For

- kaiweets enthusiasts

## Why This Product

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

## Key Features

- • **Smart Auto-Detection:** Automatically identifies AC/DC voltage, polarity, resistance & continuity for seamless testing.
- • **Extended Voltage Range:** Tests up to 100V DC—over 60% higher than typical testers for versatile automotive diagnostics.
- • **Peace of Mind Warranty:** 3-year after-sales service plus lifetime technical assistance keeps you covered.
- • **Ultra-Visible LED Display:** Clear green backlight with 0.1V precision ensures accurate readings day or night.
- • **Ergonomic & Durable Design:** 78.74-inch PU spring wire and large alligator clip enable effortless one-hand operation and long-lasting use.

## Overview

The KAIWEETS Smart Circuit Tester VT501 is a compact, battery-powered automotive tool designed for professionals and enthusiasts alike. Featuring smart auto-detection of voltage, polarity, resistance, and continuity, it supports a wide 0.8-100V DC range with a bright green LED backlight for clear readings. Its durable 78.74-inch PU spring wire and ergonomic alligator clip enhance usability, while a 3-year warranty and lifetime support ensure reliability for all your vehicle electrical testing needs.

## Description

Product Description Long Copper-Nickel Plating Probe The Copper-Nickel Plating Probe provides good electrical conductivity and the 1.65" probe ensures an effective safety distance to prevent the risk of electric shock. Large-Sized Alligator Clip A Large-Sized Alligator Clip to ensure that you can clip any object you want to test while facilitating you to be able to operate one-handed to improve efficiency. Thick Probe Cap A Thick Probe Cap protects you from accidental probe punctures while helpingto make the spring wire easy to carry. Bright Digital Display Features a clear and bright green backlight LED digital display that provides accurate volt readouts, guaranteed to be clearly visible in both bright and dim environment.

Review: Perfectly fine and easy to use. - Perfect. A fuse blew in my BMW over the winter due to some frozen windows. Rather that take it to a garage I did some research a figured out the fuse was the problem. It was not easy identifying the fuse and I did not want to take them all out sone at a time. Porsche c this and it allowed me to identify the fuse within 5 minutes. Money definitely well spent.
Review: Very solid product - Worked and fit into even the tiniest car fuse slots in which my multimeter probe was too big to fit. Very simple and clear operations and instructions.

## Features

- 【Smart Mode】The digital automotive tester defaults to SMART mode. In the SMART mode, the meter can automatically measure and identify the AC/DC voltage, polarity, resistance, and continuity. It can automatically detect the measurement content and choose the optimal range for the highest precision, eliminating the need for any additional operations on your part!
- 【Wider Voltage Range】The smart automotive circuit tester with 0.8-100V DC voltage testing range, perfect for examining different electrical circuits in vehicles. Our upgraded technology allows for measuring a maximum voltage of 100V, surpassing the typical 60V maximum voltage capability of other auto electrical testers available on the market.
- 【Wide Usage & User-friendly】The digital test light allows for the fast test of automotive headlights, taillights, turn signal circuits, fuse connections, faulty sockets, as well as other 0.8-100V DC wirings and circuits. The premium 78.74-inch long PU spring wire provides flexibility and durability compared to standard cable wires and offers convenient use and storage. It features a large-sized alligator clip for effortless one-hand operation, ensuring improved working efficiency.
- 【Precise LED Digital Display & Probe Guard Protection】The automotive circuit tester features a clear and bright green backlight LED digital display that provides accurate volt readouts. It offers a 0.1V resolution ratio with high accuracy. In comparison to LCD displays, the green LED reading display is guaranteed to be clear and visible both during the day and at night. Features a thick probe guard to protect you from accidental stab wounds while helping make the spring wire easy to carry.
- 【3-Year After-Sales Service】If durability is what you seek in a circuit testing tool, look no further. we offer a 3-year after-sales service and lifetime technical assistance. If you have any inquiries, please don't hesitate to contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C4TJ6VQC |
| Best Sellers Rank | 13,275 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 in Circuit Testers |
| Brand | KAIWEETS |
| Colour | Black |
| Compatible Devices | Cars with 12V Electrical System |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 2,078 Reviews |
| EU Spare Part Availability Duration | 3 Years |
| Included Components | manual |
| Item Dimensions | 21.6 x 5.7 x 4.4 centimetres |
| Item Weight | 0.15 Kilograms |
| Item dimensions L x W x H | 21.6 x 5.7 x 4.4 centimetres |
| Item weight | 0.15 Kilograms |
| Manufacturer | KAIWEETS |
| Manufacturer Part Number | VT501 |
| Maximum Operating Voltage | 100 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 0.8 Volts |
| Model Number | VT501 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Style | Compact |
| Style Name | Compact |

## Product Details

- **Brand:** KAIWEETS
- **Power source:** Battery Powered
- **Style:** Compact
- **Item weight:** 0.15 Kilograms
- **Item dimensions L x W x H:** 21.6 x 5.7 x 4.4 centimetres

## Images

![Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery - Image 1](https://m.media-amazon.com/images/I/71F1co-MTBL.jpg)
![Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery - Image 2](https://m.media-amazon.com/images/I/81oDzQ82kDL.jpg)
![Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery - Image 3](https://m.media-amazon.com/images/I/81gxDxMv84L.jpg)
![Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery - Image 4](https://m.media-amazon.com/images/I/81P+lvqtPpL.jpg)
![Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery - Image 5](https://m.media-amazon.com/images/I/81u8jMqKiaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfectly fine and easy to use.
*by A***N on 25 March 2026*

Perfect. A fuse blew in my BMW over the winter due to some frozen windows. Rather that take it to a garage I did some research a figured out the fuse was the problem. It was not easy identifying the fuse and I did not want to take them all out sone at a time. Porsche c this and it allowed me to identify the fuse within 5 minutes. Money definitely well spent.

### ⭐⭐⭐⭐⭐ Very solid product
*by I***L on 9 February 2026*

Worked and fit into even the tiniest car fuse slots in which my multimeter probe was too big to fit. Very simple and clear operations and instructions.

### ⭐⭐⭐⭐ A 5* product let down by a stupid mistake.
*by G***R on 16 April 2025*

This is clearly a quality bit of kit, and is supplied at a great price. The unit comes in a small but perfectly sized zip case, and is very straightforward to use once you know what you’re doing. However, that comes with a big “But”, for which I have deducted a star. The small Instruction booklet lists several languages in the Contents Page, with English at the beginning. However, my copy inexplicably started at page 9 meaning there were no English instructions! Thankfully, I was able to find them on the internet, and I quickly downloaded them. A 5* product let down by a stupid mistake.

## Frequently Bought Together

- KAIWEETS 0.8V-100V DC Smart Automotive Test Light, Buzzer Circuit Tester with Sharp Probe, Bidirectional Voltage Tester with Flashlight, Electric Test Pen for Car Battery Polarity Continuity Fuses
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- LZLINYJLONG Relay Puller Pliers Relay and Fuse Remover Tool, Automotive Relay FMM Fuses Puller Tool, Car Vehicle Battery Terminal Wiper Remover

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-06-04*