---
product_id: 707916398
title: "COOLCOLD Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue)"
brand: "coolcold"
price: "¥1510"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/707916398-coolcold-lan-tester-rj45-and-rj11-network-cable-tester-9v
store_origin: JP
region: Japan
---

# 9 LED indicators for instant wiring diagnostics 9V battery-powered for on-the-go testing Supports RJ11, RJ12, RJ45 & Cat5/6 cables COOLCOLD Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue)

**Brand:** coolcold
**Price:** ¥1510
**Availability:** ✅ In Stock

## Summary

> 🔧 Nail your network setup with precision and speed!

## Quick Answers

- **What is this?** COOLCOLD Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue) by coolcold
- **How much does it cost?** ¥1510 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/707916398-coolcold-lan-tester-rj45-and-rj11-network-cable-tester-9v)

## Best For

- coolcold enthusiasts

## Why This Product

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

## Key Features

- • **Instant Network Clarity:** 9 LED lights reveal wiring faults and connectivity status in real-time
- • **Compact & Durable Design:** Lightweight 110g tool with protective power switch for low power consumption and long-lasting use
- • **Battery-Powered Portability:** Operates on a single 9V battery—test anywhere without cords or outlets
- • **Comprehensive Fault Detection:** Automatically identifies open circuits, short circuits, and miswiring to save troubleshooting time
- • **Universal Cable Compatibility:** Effortlessly tests RJ11, RJ12, RJ45, Cat5e, Cat6, and more for versatile network setups

## Overview

The COOLCOLD Lan Tester is a compact, battery-powered network cable tester designed for professionals and DIYers alike. Featuring 9 LED indicators, it quickly diagnoses wiring issues across RJ11, RJ12, RJ45, and Cat5/6 cables, including open and short circuits. Its portable design and automatic fault detection make it an essential tool for efficient network installation and troubleshooting.

## Description

Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue)

## Features

- Ideal LAN Cable Tester While Building Or Troubleshooting Networks. 9 LED Lights To Indicated Wiring Connection On Both Remote And Master Unit Grounding Test. It Can Judge Wrong Connection, Short Circuit, And Open Circuit.
- It Can Quickly & Easily Check Following The Type Of Cables: RJ12, RJ11, RJ45, Cat 5e, Cat 5, Cat 6, 10/100 Base-T, AT&T 258 A, TIA-568A/568B, Etc.
- It Can Test Correspondingly Double-Twisted Cables 1, 2, 3, 4, 5, 6, 7, 8 And G, Operates From A Single 9V PP3 Battery (Battery Included In The Package)
- Grounding Test -Automatic Efficient Scan For The Miss Wiring, Disorder Cable, Open And Short Circuit, Super Handy Device Ensures Your Good Mood
- Protective Power Switch For Low Power Consumption-9 LEDs to Indicate Which Wire Whether Open Or Not On Both Remote And Master Unit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | COOLCOLD |
| Power Source | Battery Powered |
| Colour | Blue |
| Item Weight | 110 Grams |
| Item dimensions L x W x H | 10.7 x 9.3 x 2.5 Centimeters |
| Min. Operating Voltage | 9 Volts |
| Manufacturer | Coolcold (9016968079), Coolcold Tech |
| Manufacturer | Coolcold Tech |
| Country of Origin | China |
| Model number | Lan Tester Blue |
| Number of Memory Sticks | 1 |
| Item Weight | 110 g |
| Product Dimensions | 10.7 x 9.3 x 2.5 cm; 110 g |
| Item model number | Lan Tester Blue |
| Item Height | 2.5 Centimeters |
| Item Width | 9.3 Centimeters |
| Included Components | Lan Tester |

## Product Details

- **Brand:** COOLCOLD
- **Power Source:** Battery Powered
- **Colour:** Blue
- **Item Weight:** 110 Grams
- **Item dimensions L x W x H:** 10.7 x 9.3 x 2.5 Centimeters

## Images

![COOLCOLD Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue) - Image 1](https://m.media-amazon.com/images/I/51FCukjJqKL.jpg)

## Available Options

This product comes in different **Model** options.

## Frequently Bought Together

- COOLCOLD Lan Tester, RJ45 And RJ11 | Network Cable Tester With 9V Battery, LED Indicators RJ12 CAT5 CAT 6 UTP Ethernet Lan Cable Tester Test Tool For Internet Broadband Connection Test (Blue)
- COOLCOLD Lan Tester | Wire Tracker, Tester, Cable Tracker, RJ11 RJ45 Line Finder Network Cable Tester for LAN Ethernet Cable Collation, Phone Telephone Line Tester with 2X 9V Batteries(Multicolor)
- COOLCOLD Crimping Tool RJ45, Wire Cutter, Tool Kit, Cat5 Cat5e Cat6, 50PCS RJ45 Cat6 Passthrough Connectors, 50PCS Covers, Network Cable Tester, Wire Punch Down Cutter, Battery, Pass Through Tool kit

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/707916398-coolcold-lan-tester-rj45-and-rj11-network-cable-tester-9v](https://www.desertcart.jp/products/707916398-coolcold-lan-tester-rj45-and-rj11-network-cable-tester-9v)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-18*