---
product_id: 790004970
title: "Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size)"
brand: "winamoo"
price: "S$82"
currency: SGD
in_stock: false
reviews_count: 5
category: "Winamoo"
url: https://www.desertcart.sg/products/790004970-digital-led-circuit-tester-with-voltage-display-auto-bidirectional-voltage
store_origin: SG
region: Singapore
---

# 3-48V voltage range 0.1V resolution digital display Auto bidirectional polarity detection Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size)

**Brand:** winamoo
**Price:** S$82
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Power up your diagnostics with precision and speed!

## Quick Answers

- **What is this?** Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) by winamoo
- **How much does it cost?** S$82 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/790004970-digital-led-circuit-tester-with-voltage-display-auto-bidirectional-voltage)

## Best For

- winamoo enthusiasts

## Why This Product

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

## Key Features

- • **Precision Voltage Insight:** Accurately measures DC voltage from 3 to 48V with ±0.2V accuracy for flawless diagnostics.
- • **Ergonomic & Durable Design:** Lightweight 200g build with extended spring wire and probe ensures comfort and reach in tight spaces.
- • **Time-Saving Diagnostic Power:** Quickly detects power, ground, shorts, and breaks to speed up repairs and avoid costly downtime.
- • **Bidirectional Polarity Detection:** Instantly identifies positive and negative polarity with intuitive red/green LED indicators.
- • **Versatile Automotive Compatibility:** Perfect for cars, trucks, RVs, motorcycles, and more—your all-in-one electrical troubleshooting tool.

## Overview

The WINAMOO Digital LED Circuit Tester is a professional-grade automotive tool designed for quick and accurate voltage testing across a 3-48V range. Featuring auto bidirectional polarity detection with clear LED indicators and a high-resolution digital display, it simplifies troubleshooting for cars, trucks, RVs, and motorcycles. Lightweight and ergonomically designed with an extended spring wire and probe, this tester accelerates diagnostics by detecting power, ground, shorts, and breaks efficiently, making it an essential tool for engineers and DIY enthusiasts alike.

## Description

WINAMOO Test Light Automotive with Voltage Display for Checking Car Truck RV Motorcycle Fuses & Battery Voltage3-48 V testing range, ideal for car, truck, RV, and various vehicles' electrical circuits voltage testing, also for automotive battery, battery charging systems, ignition systems, which is a must have tool for any automotive engineer, electronic engineer or circuits DIY.BIDIRECTIONAL CIRCUIT TESTLED Indicator: Green for negative polarity & Red for positive polarity.The LED voltage display is a great addition to check fuses and battery voltage easily and quickly.Specifications and Features:Voltage: DC 3-48V(+_0.2V Accuracy)Resolution: 0.1VPackage Contents: 1* Automotive Circuit Tester with Voltage DisplayHEAVY DUTY DIAGNOSTIC TOOL1. This circuit tester can be used to detect power, ground and find shorts and breaks in wires.2. Quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and moreThis auto light tester pen will save you time and speed up the job, perfect for automotive use.

Review: By far the best tester for that price! Love the digital display as well!
Review: There are many ways to test automotive fuses, connectors, and wires, but a tool like this is the easiest that I know. I have been helping someone out with their car and had to check all of the above, plus relays. This little gem made the job go much faster. What a bargain! It works flawlessly!

## Features

- ✅ Say Goodbye to Accidents at Home – Tired of cleaning up surprise messes? Our potty training spray for puppy helps your furry friend learn exactly where to go, saving your floors, rugs, and sanity!
- ✅ Fast & Easy Dog Toilet Training – Specially formulated dog potty spray creates a familiar scent zone that gently guides your pup or kitten to the right spot. Perfect dog spray for potty training—just spray and let instincts do the rest.
- ✅ Works on Multiple Surfaces – Use this pet potty training spray on pee pads, newspapers, training mats, litter boxes, or selected indoor areas. Whether it’s a puppy potty training spray or a dog toilet training spray, it’s safe and effective.
- ✅ Great for Puppies & Older Pets Too – Whether you're training a new pup or helping an older dog unlearn bad habits, this potty spray for dog training works for all ages. It even works as a cat pee repellent to keep your feline friends away from unwanted areas.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJFH7Y4X |
| Are batteries included? | No |
| Brand | WINAMOO |
| Colour | Brown |
| Country of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (638) |
| Date First Available | 28 May 2024 |
| Generic Name | Potty Training Spray |
| Included Components | Potty Training Spray |
| Item Dimensions LxWxH | 45 x 45 x 190 Centimeters |
| Item Height | 190 Centimeters |
| Item Weight | 200 g |
| Item Width | 45 Centimeters |
| Item dimensions L x W x H | 45 x 45 x 190 Centimeters |
| Item model number | WITL109A3716 |
| Manufacturer | WINAMOO |
| Maximum Operating Voltage | 90 Volts |
| Measurement Type | Voltage Tester |
| Model number | WITL109A3716 |
| Number of Memory Sticks | 1 |
| Packer | WINAMOO |
| Power Source | Battery Powered |
| Product Dimensions | 45 x 45 x 190 cm; 200 g |
| UPC | 633337513716 |

## Product Details

- **Brand:** WINAMOO
- **Colour:** Brown
- **Item Weight:** 200 Grams
- **Item dimensions L x W x H:** 45 x 45 x 190 Centimeters
- **Power Source:** Battery Powered

## Images

![Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) - Image 1](https://m.media-amazon.com/images/I/41AFBqbQs4L.jpg)
![Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) - Image 2](https://m.media-amazon.com/images/I/41Cb1HOrwRL.jpg)
![Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) - Image 3](https://m.media-amazon.com/images/I/41G0mZA1A8L.jpg)
![Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) - Image 4](https://m.media-amazon.com/images/I/41fWrL2dF1L.jpg)
![Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker (Brown, One Size) - Image 5](https://m.media-amazon.com/images/I/41jODiYOK9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***E on 10 November 2025*

By far the best tester for that price! Love the digital display as well!

### ⭐⭐⭐⭐⭐ Review
*by S***N on 8 December 2025*

There are many ways to test automotive fuses, connectors, and wires, but a tool like this is the easiest that I know. I have been helping someone out with their car and had to check all of the above, plus relays. This little gem made the job go much faster. What a bargain! It works flawlessly!

### ⭐⭐⭐⭐⭐ Review
*by H***. on 25 December 2025*

Works great. Exactly what I need and does exactly what it is suppose to.

## Frequently Bought Together

- WINAMOO Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker
- JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + 1 Puller – for RV Camper Boat Accessories (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A)
- Sound Troubleshooting Automotive Relay Tester 12V Auto Relay Diagnostic Tool Small Handheld DIY Car Relay Tester with Battery Clips

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**Shop now:** [https://www.desertcart.sg/products/790004970-digital-led-circuit-tester-with-voltage-display-auto-bidirectional-voltage](https://www.desertcart.sg/products/790004970-digital-led-circuit-tester-with-voltage-display-auto-bidirectional-voltage)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-04*