---
product_id: 78159104
title: "ONETAK TCP/IP Ethernet RJ45 to Serial RS232 RS485 RS422 Converter Adapter Adaptor Flow Control None RTS/CTS"
brand: "atc"
price: "$5.31"
currency: USD
in_stock: false
reviews_count: 7
url: https://www.desertcart.us/products/78159104-onetak-tcp-ip-ethernet-rj45-to-serial-rs232-rs485-rs422
store_origin: US
region: United States of America
---

# 600W built-in lightning protection 10/100M auto-detect Ethernet port 3-in-1 RS232/422/485 serial interface ONETAK TCP/IP Ethernet RJ45 to Serial RS232 RS485 RS422 Converter Adapter Adaptor Flow Control None RTS/CTS

**Brand:** atc
**Price:** $5.31
**Availability:** ❌ Out of Stock

## Summary

> 🌟 Connect Smarter, Automate Faster – The Ultimate Serial-to-Ethernet Converter!

## Quick Answers

- **What is this?** ONETAK TCP/IP Ethernet RJ45 to Serial RS232 RS485 RS422 Converter Adapter Adaptor Flow Control None RTS/CTS by atc
- **How much does it cost?** $5.31 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/78159104-onetak-tcp-ip-ethernet-rj45-to-serial-rs232-rs485-rs422)

## Best For

- atc enthusiasts

## Why This Product

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

## Key Features

- • **Rock-Solid Protection:** Built-in 600W lightning protection ensures your network stays safe and reliable.
- • **Plug & Play Networking:** Auto-detects straight or crossover cables for effortless 10/100M Ethernet integration.
- • **Versatile Operating Modes:** Supports TCP/IP, UDP, DHCP, and multiple client/server modes for ultimate flexibility.
- • **Universal Serial Powerhouse:** Seamlessly convert RS232, RS422, and RS485 signals with one compact device.
- • **Industrial-Grade Installation:** Compact DIN-rail mount design fits perfectly into any professional automation setup.

## Overview

The ONETAK TCP/IP Ethernet to Serial Converter is a compact, industrial-grade adapter supporting RS232, RS422, and RS485 interfaces with baud rates up to 230.4KBPS. Featuring 600W lightning protection and a 10/100M auto-sensing Ethernet port, it offers versatile TCP/IP, UDP, and DHCP protocol support. Designed for easy DIN-rail mounting, it’s ideal for professional automation, SCADA, CNC, and medical systems requiring reliable serial-to-network communication.

## Description

TCP/IP Ethernet to Serial RS232 RS485 RS422 Converter Product features: RS-232/422/485 3-in-1 serial interface 300-230.4KBPS baud rate RS-485 conversion offers automatic data control Support 2, 4 wire RS-485 All serial ports have built in 600W lightning protection 10/100M Ethernet, auto detect straight/cross cable Support protocols like TCP/IP, UDP, DHCP Support standard DIN-rail, easy to install and fix Compact size (95×65×25mm) Operating modes: Driver operating modes Windows standard serial port Socket operating modes TCP Server operating mode TCP Client operating mode UDP operating modes Special operating modes Peer connection Modem mode Application fields: LED INFO display equipments PLC control and management SCADA, measuring instruments and monitoring system CNC management Medical treatment/medication automation Factory automation Building automation Check on work attendance/ Human resource management Package includes: Main device 1pc; Power adapter 1pc (US plug or EU plug); CD 1pc.

## Features

- TCP/IP Ethernet to Serial RS232 RS485 RS422 Converter

## Product Details

- **Compatible Devices:** PC
- **Specific Uses For Product:** personal
- **Connector Type:** DB9, RJ45
- **Brand:** Atc
- **Number of Ports:** 3

## Images

![ONETAK TCP/IP Ethernet RJ45 to Serial RS232 RS485 RS422 Converter Adapter Adaptor Flow Control None RTS/CTS - Image 1](https://m.media-amazon.com/images/I/71T8F-JZyqL.jpg)

## Questions & Answers

**Q: Is this a bidirectional device?**
A: yup https://www.usconverters.com/downloads/xs1000/3-XS1000-User-Manual-v2.0.pdf

**Q: can 2x of these connect to each other so i can use a rs485 joystick over IP to a PTZ camera (cam supports rs485 joystick) ?  Cam - X <-> X - Joystick**
A: Yes.  Doing that very thing myself.

**Q: Cant get this to work. Can not get to the configuration page in the web browser. Using Windows 10 with cross over cable going to laptop.  cant ping**
A: I haven't tried crossover cable. can you plug it into a local network?You have to give your tcp/ip adapter to have an ip on the same subnet of the device's webserver.

**Q: does this support a virtual com port that win 7 will recognize**
A: Yes, can do it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Serial Port Server
*by K***O on March 1, 2017*

It worked perfectly. I have an older Broadcast Audio Processor that can only be remote controlled via a serial port. It's rare that I need to make changes on this processor, but if I did, I had to go to the hilltop. Needles to say, I got tired of making unscheduled trips up the hill to crank on the processor. Now, I can control it from anywhere. The item was well packaged and arrived on time. It's a nice looking unit with a metal case. I won't go as far as saying the manual was useless, it did contain some meaningful information. However, some of the English didn't make sense as it was obviously translated from another language. The unit isn't plug n play. But if you have a basic understanding of how to configure TCP/IP settings on your computer, you should be able to connect to the unit without problems. Connecting to it's built in GUI on port 80 with a browser is easy. Using it as a bridge to communicate with your remote device is a little more difficult. You'll need to set up a Static IP number for the device, and specify port number and protocol (TCP/UDP). After that, fire up your terminal software and connect.

### ⭐⭐⭐ I would buy elsewhere
*by D***. on July 26, 2017*

I purchased two units. Both were obviously used. No CD was included. Couldn't configure the units without resetting them since previous consumer had changed defaults. After downloading software from the internet and resetting the units they are working.

### ⭐ Missing Power Adapter in box...(Never buy it)
*by J***M on February 11, 2016*

Never buy it...try one of other brandsI ordered two units for urgent project. I was happy it was listed in prime so fast delivery...guess what... one of units is missing power adapter...I was shocked... And I have to return it to receive a replacement unit...and I can't finish my project on time... What a product on prime.Order this one if you don't mind many back and forth...

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-23*