--- product_id: 744628819 title: "USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS" brand: "pusr" price: "฿43" currency: THB in_stock: false reviews_count: 4 url: https://www.desertcart.co.th/products/744628819-usr-tcp232-302-small-size-serial-rs232-ethernet-tcp-ip store_origin: TH region: Thailand --- # Baud rate 600 bps to 230.4 Kbps 10/100Mbps Ethernet RJ45 port Firmware upgrade via network USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS **Brand:** pusr **Price:** ฿43 **Availability:** ❌ Out of Stock ## Summary > 🚀 Power your legacy serial devices with future-ready Ethernet speed! ## Quick Answers - **What is this?** USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS by pusr - **How much does it cost?** ฿43 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/744628819-usr-tcp232-302-small-size-serial-rs232-ethernet-tcp-ip) ## 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 & Durable Design:** Small footprint (71x60x25mm) with wide operating temperature (-25°C to 75°C) for reliable performance anywhere. - • **Robust Data Transmission:** Two-way transparent RS232 to Ethernet communication with heartbeat mechanism to prevent deadlinks. - • **Flexible Protocol Support:** Operates in TCP/UDP server/client modes plus HTTPD client for versatile networking. - • **User-Friendly Configuration:** Built-in web interface for easy parameter setup and remote firmware upgrades. - • **Seamless Network Integration:** Supports DHCP/DNS for effortless IP management and connectivity. ## Overview The USR-TCP232-302 is a compact, cost-effective serial-to-Ethernet converter designed for professional-grade transparent data transmission. It supports multiple network protocols including DHCP, DNS, TCP, and UDP, enabling seamless integration of RS232 devices into modern IP networks. Featuring a user-friendly web interface and network-based firmware upgrades, it ensures hassle-free setup and maintenance. Its robust design and flexible baud rate range make it ideal for industrial and enterprise environments seeking reliable, scalable connectivity. ## Description Description This is a Serial RS232 - Ethernet server, used for data transparent transmission. USR-TCP232-302 is a low cost serial device server. Provides two-way transparent transmission between RS232 and Lenovo USR-TCP232-302 is combined with TCP/IP protocol. Users can use device network communication. Features: Support DHCP Automatically obtain IP address and query IP address through serial setting protocol. Support DNS function Set parameters on the web page. Firmware upgrade via network Auto-MDI/MDIX, RJ45 Port, 10/100Mbps Serial port baud rate from 600 bps to 230.4 Kbps Check None, Odd, Even, Mark, Space Working modes: TCP server, TCP client, UDP client, UDP server, HTTPD client Support virtual serial port and provide support software USR-VCOM Heartbeat packaging mechanism ensures connection No deadlink. User-defined registration packaging mechanism Review the connection status and use it as a custom packet header. In TCP server mode, client number range from 1 to 16, default number is 4. Global and unique MAC address purchased from IEEE allows users to define MAC address. - Restore factory default on gateway, switch and router. It works with LAN, and can also work on the Internet (external network). Provide PC TCP/IP socket programming for VB, C++, Delphi, Android, IOS etc. Accept custom. Parameters Voltage: DC 4.75 ~ 7V Current: 150mA Size:71*60*25mm Operating Temperature: -25 ~ 75°C Storage Temperature: -40 ~ 105 °C, Relative Humidity 5 ~ 95% Interface: RS232 Network protocol: IP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP ## Features - Support DHCP/DNS/WPAD client - Support built-in webpage - Firmware upgrade via network - Does not support Flow Control CTS/RTS ## Technical Specifications | Specification | Value | |---------------|-------| | Batteries Required | No | | Brand | PUSR | | Color | Server + Terminal | | Manufacturer | USR | | Item Model Number | USR-TCP232-302 | | Connectivity Technology | Ethernet | | Compatible Devices | PC, Smartphone | | Included Components | Power Adapter | | Product Dimensions | 8 x 5 x 3 cm; 199.58 g | | Item Weight | 200 g | ## Product Details - **Compatible Devices:** PC, Smartphone - **Specific Uses For Product:** Transparency transmits data between TCP/IP and RS232 - **Connector Type:** RJ45 - **Color:** Server + Terminal - **Item dimensions L x W x H:** 8 x 5 x 3 cm ## Images ![USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS - Image 1](https://m.media-amazon.com/images/I/61mlZeH+gSL.jpg) ![USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS - Image 2](https://m.media-amazon.com/images/I/51+h2S056yL.jpg) ![USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS - Image 3](https://m.media-amazon.com/images/I/41mQow5AQJL.jpg) ![USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS - Image 4](https://m.media-amazon.com/images/I/51p57jlI9zL.jpg) ![USR-TCP232-302 Small Size Serial RS232 - Ethernet TCP IP Server Module Ethernet Converter for DHCP/DNS - Image 5](https://m.media-amazon.com/images/I/61JlT9RyQJL.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 ### ⭐⭐⭐⭐ こういうのでいいんだよ。 *by D***A on October 24, 2022* 不満点から。1.電源の供給はUSBか端子台がよかった。5V駆動で電流も500mA位なので、電池で使いやすい仕様だったらもっとよかった。2.リセット、初期化関係のスイッチがPCB上にしかないので、IP不明、RFC2217無効状態の場合には基板上のジャンパーを触る必要が有る。考えようによっては、間違って初期化されるリスクは減るので、用途によってはこっちのほうがいいとおもう。3.送信のトリガー設定が無いよく有る〇〇mSecオーバータイムとかCRLFの受信で送信とかそういう設定が無い(少なくとも私は見つけられなかった)なので高速で大量に文字列を通信する用途だと通信量が多くなる傾向にある。4.入手性の不安こればっかりは値段が安いからなんともいえないですが、今後安定して入手できるかわからない。良い点1.安い割り切った製品設計でとても良いと思います。2.使いやすい電源仕様付属のACアダプタを使うと100Vでしか使えませんが、装置自体はDC5Vなので電池で動くレベルです。3.動作モードが選べる2台ペアでしか動かないとか、そんな事は無く、TCPサーバ/クライアントどちらでも動作するし、自分で通信プログラム組めばネットワーク経由でシリアルコマンド送れるのですごく良い。付属の仮想シリアルとしてマウントするドライバはちょっと使いにくいけど。値段とか機能からみた評価から★4つで。 ### ⭐ 最初から使えない。 *by 非***開 on October 31, 2024* 動かないから返品依頼すると業者からサポートのメールが来ました。メールでやり取りしていると作業内容を動画撮影してYoutubeにアップロードの指示が来たので面倒になり、返品依頼をキャンセルしました。なんか、そこまで言われるとこっちが悪いみたいで何だかな、って気分でした。 ### ⭐ 通信機能せず *by T***5 on July 4, 2023* LAN側からのデバイス検出・設定までは機能するものの、PCから通信を行なおうとしても接続エラーが返って来るのみでシリアル側との通信が出来ない状態。通信テスト用ユーティリティで試してみても同様だったので返品処理しました。 ## Frequently Bought Together - USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS - OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)… - StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK), 10 ft / 3m --- ## 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.co.th/products/744628819-usr-tcp232-302-small-size-serial-rs232-ethernet-tcp-ip](https://www.desertcart.co.th/products/744628819-usr-tcp232-302-small-size-serial-rs232-ethernet-tcp-ip) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-25*