---
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: "¥3217"
currency: JPY
in_stock: true
category: "Cerrxian"
url: https://www.desertcart.jp/products/97735136-cerrxian-ethernet-surge-protector-rj45-coupler-female-to-female-network
store_origin: JP
region: Japan
---

# 8 TVS surge suppressors 100Mbps data transmission RJ45 female-to-female coupler CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack)

**Brand:** cerrxian
**Price:** ¥3217
**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?** ¥3217 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/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 diodes shield your network from damaging surges ⚡
- • **Plug & Play Simplicity:** No confusing ports—both ends identical for effortless installation in any setup 🔌
- • **Reliable 100Mbps Speed:** Maintain smooth, uninterrupted data flow with stable 100Mbps transmission 🌐
- • **Seamless Network Extension:** Easily connect two Ethernet cables for longer reach without signal loss 🔗
- • **EMI Shielding for Crystal Clear Signals:** Metal enclosure blocks electromagnetic interference for pristine connectivity 🛡️

## Overview

The CERRXIAN Ethernet Surge Protector RJ45 Coupler (2-Pack) combines robust surge protection with convenient cable extension. Featuring 8 built-in TVS diodes, it safeguards your expensive routers and outdoor POE antennas from lightning and abnormal currents. Its metal shielding blocks electromagnetic interference, ensuring stable 100Mbps data transmission. Designed for easy plug-and-play use with identical RJ45 female ports on both ends, this device is perfect for indoor and outdoor network setups.

## Description

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

## 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 | #17,272 in Electronics ( See Top 100 in Electronics ) #178 in Surge Protectors |
| Brand | CERRXIAN |
| Color | black |
| Compatible Devices | Personal Computer |
| Customer Reviews | 4.2 4.2 out of 5 stars (332) |
| Enclosure Material | Metal |
| Item Dimensions L x W | 17.72"L x 10.24"W |
| Item Weight | 0.02 kg |
| Manufacturer | Lemeng |
| Mfr Part Number | cx-21 |
| Model Number | 8541544724 |
| Number of Items | 2 |
| Number of Outlets | 16 |
| Number of Packs | 2 |
| Number of Ports | 8 |
| Other Special Features of the Product | Surge Protection |
| Plug Type | Type A |
| Recommended Uses For Product | Indoor, Outdoor |
| Shape | Rectangle |
| UPC | 680613035776 |
| Unit Count | 2 Count |

## 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.

## Frequently Bought Together

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

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-19*