---
product_id: 97735136
title: "CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack)"
brand: "cerrxian"
price: "€ 19.70"
currency: EUR
in_stock: true
reviews_count: 10
category: "Cerrxian"
url: https://www.desertcart.fi/products/97735136-cerrxian-ethernet-surge-protector-rj45-coupler-female-to-female-network
store_origin: FI
region: Finland
---

# 8 TVS surge suppressors 100Mbps stable data rate Connects 2 cables seamlessly CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack)

**Brand:** cerrxian
**Price:** € 19.70
**Availability:** ✅ In Stock

## Summary

> ⚡ Protect your network like a pro—because downtime is so last decade!

## Quick Answers

- **What is this?** CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack) by cerrxian
- **How much does it cost?** € 19.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/97735136-cerrxian-ethernet-surge-protector-rj45-coupler-female-to-female-network)

## Best For

- cerrxian enthusiasts

## Why This Product

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

## Key Features

- • **Lightning-Fast Defense:** Built-in 8 TVS anti-surge tech shields your network from damaging spikes ⚡
- • **Plug & Play Simplicity:** No confusing ports—both ends identical for instant, hassle-free setup
- • **Reliable 100Mbps Speed:** Maintain smooth, uninterrupted data flow with consistent 100Mbps transmission 📶
- • **Seamless Network Extension:** Effortlessly link two Ethernet cables for longer reach without signal loss 🔗
- • **EMI Shielding for Crystal Clear Signal:** Advanced external shielding blocks electromagnetic interference for pristine connectivity

## Overview

The CERRXIAN RJ45 Coupler Ethernet Network Surge Protector Extension Adapter (2-Pack) combines robust surge protection with seamless cable extension. Featuring 8 built-in TVS suppressors, it safeguards your expensive network devices from lightning and power surges while maintaining a stable 100Mbps data rate. Its EMI shielding ensures interference-free connections, and the plug-and-play design makes setup effortless. Ideal for professionals who demand reliable, uninterrupted network performance and want to future-proof their infrastructure.

## Description

desertcart.com: CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack) : Electronics

Review: 2+ years problem free - Been using 2 years without a problem, but how would you know if it did anything? I got these after an ethernet port on my router got fried where I had it connected to another building. I used a different port and installed one of these on each end of the wire with a 1 ft patch cord.
Review: Great insurance - So far so good, of course only a surge will tell in the fututre. Well made and fit perfectly . We had a lightning strike come in through the cable took out tv modem and royter and cable box, had surge protected wall oytlets but not the cable

## Features

- PROTECTION EQUIPMENT - The Network Surge Protector Suppressors protects against network surges.Insert a Network Surge Protector in your network cables, to prevent network surging.This is a good insurance policy for your expensive router and outdoor POE antenna.
- EXTENSION - Use this RJ45 Coupler to connect two network cables into one longer network cable. When your network cable is too short and needs to be extended, using this dual-pass is a very good solution.Data transmission rate:100Mbps
- SURGE PROTECTION - Built-in 8 TVS anti-detonator, prevent lightning and other abnormal current through the network cable damage to your computer equipment.
- HIGH QUALITY - Fixed interface shielding external EML,RFL and other electromagnetic interference.Effectively prevent network signal damage.Using PC flame retardant raw materials, fire rating 100V0.
- EASY TO USE - Plug and play.There is no ""In"" or ""Out"" cable side of this device, both sides are identical RJ-45 Interface.Regardless of whether your protected device is behind any particular side, it can work properly by connecting the correct cables.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07LG32KFF |
| Best Sellers Rank | #28,001 in Electronics ( See Top 100 in Electronics ) #204 in Surge Protectors |
| Customer Reviews | 4.4 4.4 out of 5 stars (309) |
| Date First Available | December 29, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.81 ounces |
| Item model number | 8541544724 |
| Manufacturer | Lemeng |
| Product Dimensions | 17.72 x 10.24 x 0.04 inches |

## Product Details

- **Brand:** CERRXIAN
- **Color:** black
- **Product Dimensions:** 17.72"L x 10.24"W
- **Special Feature:** Surge Protection
- **Total Power Outlets:** 16

## Images

![CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack) - Image 1](https://m.media-amazon.com/images/I/71auM+xxJrL.jpg)

## Questions & Answers

**Q: You don't know the difference between cm and mm... and I should trust your electrical design skills?**
A: Thank you for your suggestions and reading.We have fixed the error, please feel free to contact us if you have any other questions.

**Q: Were does a ground wire connect?**
A: No,it doesn't.But we have anoter version product which with a ground wire.

**Q: Will this work with PoE devices?**
A: Yes = that's what I used them for.

**Q: Does this not need a separate grounding wire?**
A: If your device is exposed to strong current, we recommend that you connect to a ground wire.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 2+ years problem free
*by J***R on November 20, 2025*

Been using 2 years without a problem, but how would you know if it did anything? I got these after an ethernet port on my router got fried where I had it connected to another building. I used a different port and installed one of these on each end of the wire with a 1 ft patch cord.

### ⭐⭐⭐⭐⭐ Great insurance
*by D***N on September 18, 2025*

So far so good, of course only a surge will tell in the fututre. Well made and fit perfectly . We had a lightning strike come in through the cable took out tv modem and royter and cable box, had surge protected wall oytlets but not the cable

### ⭐⭐⭐⭐ Good for 100Mbps
*by G***O on November 21, 2025*

Work fine but 100Mbps Not for 1Gpbs NICs

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**Shop now:** [https://www.desertcart.fi/products/97735136-cerrxian-ethernet-surge-protector-rj45-coupler-female-to-female-network](https://www.desertcart.fi/products/97735136-cerrxian-ethernet-surge-protector-rj45-coupler-female-to-female-network)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-05*