--- product_id: 97735136 title: "CERRXIAN RJ45 Coupler Ethernet Network Surge Protector Extension Adapter(2-Pack)" brand: "cerrxian" price: "HK$136" currency: HKD in_stock: true category: "Cerrxian" url: https://www.desertcart.hk/products/97735136-cerrxian-rj45-coupler-ethernet-network-surge-protector-extension-adapter-2 store_origin: HK region: Hong Kong --- # 8 TVS surge suppressors 100Mbps data transmission RJ45 female-to-female coupler CERRXIAN RJ45 Coupler Ethernet Network Surge Protector Extension Adapter(2-Pack) **Brand:** cerrxian **Price:** HK$136 **Availability:** ✅ In Stock ## Summary > ⚡ Protect your network like a pro—surge-proof your connection, extend your reach! ## Quick Answers - **What is this?** CERRXIAN RJ45 Coupler Ethernet Network Surge Protector Extension Adapter(2-Pack) by cerrxian - **How much does it cost?** HK$136 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/97735136-cerrxian-rj45-coupler-ethernet-network-surge-protector-extension-adapter-2) ## 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 instant, hassle-free setup 🔌 - • **Reliable 100Mbps Speed:** Maintain smooth, uninterrupted data flow at 100Mbps 🌐 - • **Seamless Network Extension:** Effortlessly connect two Ethernet cables for longer reach 🔗 - • **EMI Shielding for Crystal Clear Signals:** Advanced metal shielding blocks electromagnetic interference for stable connections 🛡️ ## 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 network devices from lightning and power surges while supporting reliable 100Mbps data transmission. Its metal shielding minimizes electromagnetic interference, ensuring signal integrity. Designed for both indoor and outdoor use, this plug-and-play device offers identical RJ45 female ports on both ends for effortless installation, making it an essential upgrade for any professional-grade network setup. ## 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 | #10,607 in Electronics ( See Top 100 in Electronics ) #107 in Surge Protectors | | Brand | CERRXIAN | | Color | black | | Compatible Devices | Personal Computer | | Customer Reviews | 4.3 4.3 out of 5 stars (325) | | 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 Outlets | 16 | | 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 RJ45 Coupler Ethernet Network Surge Protector 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 - CERRXIAN Ethernet Surge Protector RJ45 Coupler Female to Female Network Surge Protector Outdoor Arrester Protection Device Extension Adapter(2-Pack) - VCE Coaxial Surge Lightning Protector for Coaxial TV Antenna and Satellite in-Line 75 Ohm 5-2500MHz, 2 Pack Silver - Gigabit Ethernet Surge Protector 10KV Lightning Suppressor LAN Network CAT5/CAT6 Thunder Arrestor 10/100/1000 Mbps --- ## 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.hk/products/97735136-cerrxian-rj45-coupler-ethernet-network-surge-protector-extension-adapter-2](https://www.desertcart.hk/products/97735136-cerrxian-rj45-coupler-ethernet-network-surge-protector-extension-adapter-2) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-08-24*