---
product_id: 37132228
title: "USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS"
brand: "pusr"
price: "$U2940"
currency: UYU
in_stock: true
reviews_count: 13
category: "Pusr"
url: https://www.desertcart.uy/products/37132228-usr-tcp232-302-tiny-size-rs232-to-tcp-ip-converter
store_origin: UY
region: Uruguay
---

# Baud rate 600 bps to 230.4 Kbps 10/100Mbps RJ45 Ethernet port Supports TCP/UDP modes & DHCP/DNS USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS

**Brand:** pusr
**Price:** $U2940
**Availability:** ✅ In Stock

## Summary

> 🚀 Future-proof your legacy gear with lightning-fast RS232 to Ethernet conversion!

## Quick Answers

- **What is this?** USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS by pusr
- **How much does it cost?** $U2940 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/37132228-usr-tcp232-302-tiny-size-rs232-to-tcp-ip-converter)

## Best For

- pusr enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Powerful:** Tiny footprint (3.15 x 1.97 x 1.18 in) packs industrial-grade performance for your automation and IoT projects.
- • **Robust Multi-Protocol Support:** Operate as TCP Server/Client, UDP Server/Client, or HTTPD Client to fit any industrial or smart home setup.
- • **Plug & Play with Smart DHCP & DNS:** Auto IP assignment and domain support mean zero hassle in connecting your devices to modern networks.
- • **Seamless Legacy Device Networking:** Transform any RS232 serial device into a network-ready powerhouse with effortless Ethernet integration.
- • **Reliable Connection with Heartbeat & Custom Packets:** Say goodbye to dead links with intelligent connection monitoring and customizable packet headers.

## Overview

The USR-TCP232-302 is a compact, cost-effective serial device server that enables bidirectional transparent data transmission between RS232 and Ethernet networks. Featuring integrated TCP/IP protocols, it supports DHCP, DNS, multiple communication modes (TCP/UDP/HTTPD), and baud rates up to 230.4 Kbps. Designed for industrial automation, smart homes, and legacy device networking, it ensures reliable connections with heartbeat mechanisms and customizable packet headers, all manageable via a user-friendly web interface.

## Description

USR-TCP232-302 is a low-cost serial device server,whose function is to realize bidirectional transparent transmission between RS232 and Ethernet. Features of RS232 Ethernet Server Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol Support DNS function Set parameters through webpage Upgrade firmware via network Auto-MDI/MDIX, RJ45 port with 10/100Mbps Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client Support virtual serial port and provide corresponding software USR-VCOM Heartbeat package mechanism to ensure connection is reliable, put an end to dead link User-defined registration package mechanism, check connection status and use as custom packet header Under TCP Server mode, Client number ranges from 1 to 16; default number is 4 The global unique MAC address bought from IEEE, user can define MAC address Restore factory default Across the gateway, switches, routers Can work in LAN, also can work in the Internet (external network) Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS Support customization Application Field of RS232 Ethernet Server Industrial data transmission, industrial automation security and protection monitoring, public security Smart home, power control, environmental monitoring, intelligent agriculture Door check on work attendance system, POS system, rice selling system Building automation system, power monitoring, self-service banking system, telecom machine room monitoring Package includes: 1* RS232 to TCP IP Converter 1* Power Adapter

Review: Awesome little adaptor and exceptional value - I connected it up to an ancient lab moisture measuring instrument with a com port, connected the other end to my network, installed their software (Windows 10) and within a few minutes was reading data! I was stunned how simple it made dialing in the configs. Really excellent, easy to use software, solid hardware. This thing is going to solve a lot of interface issues for me as we digitize our older lab instruments.
Review: Great for older PLC's - Got this to work with an ALLEN BRADLEY SLC 5/04 PLC processor. Had to take it out of it's metal case because I did not have a Male to Female DB9 cable at the time. At first it wouldn't work because I had a null modem adapter between the usr and processor. The pinout in the manual for the usr led me to believe that i needed to flip flop the Rx & Tx lines. But after removing the null adapter, it worked. So either it was wrong, or the pinout for my PLC was wrong. I got it setup up on a static IP on my home network and can access it anywhere with anything (including VNC'ing into my server with a smartphone from work. I was able to go online with the PLC from 3 different computers at the same time even. It did take some time setting up the serial comms options so it's not a "Pull it out of the box, plug it in and it works" thing. If baud rate, parity, RTS, DF1, CRC, or packet size are foreign words to you, buy this at your own risk. Or actually, do buy it. If you don't know anything about how RS232 comms work, this would be a great learning tool. If it works on ALLEN BRADLEY'S proprietary DF1 protocol (which this thing does not know what that is and nothing else on this planet uses it), then it will work on anything.

## Features

- This is a serial RS232 to Ethernet server, used for data transparent transmission. USR-TCP232-302 is a low-cost serial device server,whose function is to realize bidirectional transparent transmission between RS232 and Ethernet. USR-TCP232-302 is internally integrated with TCP/IP protocol. User can apply it to device networking communication.
- Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol, Support DNS function, Set parameters through webpage, Upgrade firmware via network.
- Auto-MDI/MDIX, RJ45 port with 10/100Mbps, Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space.
- Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client. Support virtual serial port and provide corresponding software USR-VCOM, Heartbeat package mechanism to ensure connection is reliable, put an end to dead link, User-defined registration package mechanism, check connection status and use as custom packet header.
- Under TCP Server mode, Client number ranges from 1 to 16; default number is 4, The global unique MAC address bought from IEEE, user can define MAC address, Across the gateway, switches, routers, Can work in LAN, also can work in the Internet (external network).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01GPGPEBM |
| Best Sellers Rank | #103 in Serial Adapters |
| Customer Reviews | 4.1 4.1 out of 5 stars (222) |
| Date First Available | August 26, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7 ounces |
| Item model number | USR-TCP232-302 |
| Manufacturer | USR |
| Product Dimensions | 3.15 x 1.97 x 1.18 inches |

## Product Details

- **Color:** Server +Terminal part
- **Compatible Devices:** Desktop
- **Connector Type:** Rs232
- **Item dimensions L x W x H:** 3.15 x 1.97 x 1.18 inches
- **Specific Uses For Product:** Transmit data transparently between TCP/IP and RS232

## Images

![USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS - Image 1](https://m.media-amazon.com/images/I/61mlZeH+gSL.jpg)

## Questions & Answers

**Q: Does the included terminal software support sending a SysRq break signal to the remote console (if it's a rs232 linux tty)?**
A: It transmits data in binary, so if the bits go in one end, they come out the other. This works even to the point of passing RS485 multidrop addresses. Since SysRq is just a key sequence represented by a binary sequence, as long as your source device doesn't intercept it, it will come out at the remote RS232 interface.

**Q: Does this item come with an AC adaptor to provide the 5vdc?**
A: yes

**Q: I’d like to control a remote projector that only has an Rs232 port.  Can each device be given a static ip?**
A: Each device be given a static ip,but this product is a data transmission device. If you want to control a remote projector,we recommend the USR-IO424T-EWR.

**Q: is the serial port modbus compatable?**
A: it support transparent modbus data.do not support modbus RTU to modbus TCP.
pls refer model USR-TCP232-410s which support modbus RTU to modbus TCP.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome little adaptor and exceptional value
*by M***S on February 22, 2021*

I connected it up to an ancient lab moisture measuring instrument with a com port, connected the other end to my network, installed their software (Windows 10) and within a few minutes was reading data! I was stunned how simple it made dialing in the configs. Really excellent, easy to use software, solid hardware. This thing is going to solve a lot of interface issues for me as we digitize our older lab instruments.

### ⭐⭐⭐⭐⭐ Great for older PLC's
*by L***. on November 18, 2018*

Got this to work with an ALLEN BRADLEY SLC 5/04 PLC processor. Had to take it out of it's metal case because I did not have a Male to Female DB9 cable at the time. At first it wouldn't work because I had a null modem adapter between the usr and processor. The pinout in the manual for the usr led me to believe that i needed to flip flop the Rx & Tx lines. But after removing the null adapter, it worked. So either it was wrong, or the pinout for my PLC was wrong. I got it setup up on a static IP on my home network and can access it anywhere with anything (including VNC'ing into my server with a smartphone from work. I was able to go online with the PLC from 3 different computers at the same time even. It did take some time setting up the serial comms options so it's not a "Pull it out of the box, plug it in and it works" thing. If baud rate, parity, RTS, DF1, CRC, or packet size are foreign words to you, buy this at your own risk. Or actually, do buy it. If you don't know anything about how RS232 comms work, this would be a great learning tool. If it works on ALLEN BRADLEY'S proprietary DF1 protocol (which this thing does not know what that is and nothing else on this planet uses it), then it will work on anything.

### ⭐⭐⭐⭐ Important in your register
*by B***A on May 12, 2025*

Some difficult to install

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-05*