---
product_id: 241598794
title: "RJ11 Telephone Fax Surge Protector - Protective Device with 10KA Surge Capacity, Multi-Level Protection, 2Mbps Transmission, Easy Installation"
brand: "sonew"
price: "$33"
currency: NZD
in_stock: true
reviews_count: 4
category: "Sonew"
url: https://www.desertcart.nz/products/241598794-rj11-telephone-fax-surge-protector-protective-device-with-10ka-surge
store_origin: NZ
region: New Zealand
---

# Nanosecond response speed Low insertion loss for smooth lines Gas discharge tube for surge protection RJ11 Telephone Fax Surge Protector - Protective Device with 10KA Surge Capacity, Multi-Level Protection, 2Mbps Transmission, Easy Installation

**Brand:** sonew
**Price:** $33
**Availability:** ✅ In Stock

## Summary

> ⚡ Protect your connection, power your peace of mind.

## Quick Answers

- **What is this?** RJ11 Telephone Fax Surge Protector - Protective Device with 10KA Surge Capacity, Multi-Level Protection, 2Mbps Transmission, Easy Installation by sonew
- **How much does it cost?** $33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/241598794-rj11-telephone-fax-surge-protector-protective-device-with-10ka-surge)

## Best For

- sonew enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Robust gas discharge tube technology safeguards your valuable equipment from lightning and surges.
- • **Instant Surge Defense:** Nanosecond semiconductor response shields your data lines from sudden voltage spikes.
- • **Seamless Connectivity:** Low insertion loss ensures uninterrupted, crystal-clear communication.
- • **Effortless Installation:** Rack-mountable design with no special maintenance needed—secure your network in minutes.
- • **Universal Compatibility:** Fits all standard RJ11 interfaces—plug and protect without hassle.

## Overview

The RJ11 Telephone Fax Protector is a high-performance surge arrester designed to shield low voltage control lines from transient voltage spikes. Featuring a fast-acting semiconductor device with nanosecond response and a gas discharge tube, it ensures minimal signal loss and reliable protection for telecommunications, financial, and control systems. Easy to install and compatible with all standard RJ11 interfaces, this device is essential for maintaining uninterrupted, secure data and audio transmission.

## Description

desertcart.com: RJ11 Telephone Fax Protector, Thunder Lighting Arrester Device, Audio Data Single Protector 110V : Electronics

Review: Product works Great - Works great so far! 8 months in.
Review: Read this before you install. - The FSD-RJ11 is well built and well designed and should work. The deficiencies are that there is no easy way to mount it, so have some wire ties available to secure it. But the major deficiency is that the pins are not identified and there is no schematic. If you connect it incorrectly, you do not obtain full protection. So I took mine apart. There are two independent 2 wire circuits that are protected. One goes between pins 2-3 on the input side to pins 2-3 on the output side, the other is connected from pins 4-5 to 4-5. Also, don't swap the input and output sides, it matters.

## Features

- The telephone arrester is designed according to IEC and international standards and is mainly used to prevent of the low voltage control line from entering the equipment.
- The gas discharge tube emits a transient voltage through the contained plasma gas, which utilizes excess voltage in the input power and safely releases it. It ensures the security of a variety of valuable components.
- The telephone arrester has low insertion loss and excellent performance, which ensures smooth lines and is more energy-saving and environmentally friendly. Built-in fast semiconductor device with response speed of nanoseconds, and low voltage.
- Easy to install, suitable for all standard interface types, rack-mountable construction, easy to install and requires no special maintenance.
- They are widely used in a variety of data lines, monitoring and control lines, such as financial systems, telecommunications systems, transportation systems, petrochemical control systems. Instrument line, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZNZWYZ9 |
| Best Sellers Rank | #183,084 in Electronics ( See Top 100 in Electronics ) #1,034 in Surge Protectors |
| Customer Reviews | 4.1 4.1 out of 5 stars (26) |
| Date First Available | May 6, 2022 |
| Item Weight | 3.2 ounces |
| Manufacturer | Sonew |
| Package Dimensions | 4.69 x 2.48 x 1.54 inches |

## Product Details

- **Brand:** Sonew
- **Product Dimensions:** 3.15"L x 0.98"W
- **Special Feature:** Fast Semiconductor
- **Total Power Outlets:** 1
- **Voltage:** 110 Volts

## Images

![RJ11 Telephone Fax Surge Protector - Protective Device with 10KA Surge Capacity, Multi-Level Protection, 2Mbps Transmission, Easy Installation - Image 1](https://m.media-amazon.com/images/I/61WZ34l4veL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Product works Great
*by D***D on June 9, 2025*

Works great so far! 8 months in.

### ⭐⭐⭐⭐ Read this before you install.
*by A***R on July 14, 2025*

The FSD-RJ11 is well built and well designed and should work. The deficiencies are that there is no easy way to mount it, so have some wire ties available to secure it. But the major deficiency is that the pins are not identified and there is no schematic. If you connect it incorrectly, you do not obtain full protection. So I took mine apart. There are two independent 2 wire circuits that are protected. One goes between pins 2-3 on the input side to pins 2-3 on the output side, the other is connected from pins 4-5 to 4-5. Also, don't swap the input and output sides, it matters.

### ⭐ Doesn't work at all
*by J***R on July 1, 2025*

I bought this to use after a lightning strike took out my DSL modem and router last year. I had it installed correctly with the ground connected to my home's ground circuit - goes to an 8 foot ground rod. We had another bad storm and lightning came in and went right through to take out the modem and router again.

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**Shop now:** [https://www.desertcart.nz/products/241598794-rj11-telephone-fax-surge-protector-protective-device-with-10ka-surge](https://www.desertcart.nz/products/241598794-rj11-telephone-fax-surge-protector-protective-device-with-10ka-surge)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-03*