--- product_id: 348233727 title: "DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE" brand: "dtech" price: "$207.86" currency: USD in_stock: true reviews_count: 5 category: "Dtech" url: https://www.desertcart.us/products/348233727-dtech-serial-to-ethernet-converter-adapter-rs232-rs422-rs485-to store_origin: US region: United States of America --- # Power Over Ethernet (PoE) enabled 10/100M Ethernet with TCP/IP & DHCP support 3-in-1 RS232/422/485 serial interface DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE **Brand:** dtech **Price:** $207.86 **Availability:** ✅ In Stock ## Summary > 🌟 Connect Smarter, Work Faster – The Ultimate Serial-to-Ethernet Powerhouse! ## Quick Answers - **What is this?** DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE by dtech - **How much does it cost?** $207.86 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/348233727-dtech-serial-to-ethernet-converter-adapter-rs232-rs422-rs485-to) ## Best For - dtech enthusiasts ## Why This Product - Trusted dtech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **High-Speed Data Transfer:** Enjoy blazing-fast 10/100 Mbps full/half duplex Ethernet with baud rates up to 921,600 bps for real-time communication. - • **Dual-Port Industrial Grade:** Simultaneously operate RS-232 and RS-485 ports, perfect for remote monitoring, POS, security, and ATM systems. - • **Robust Network Flexibility:** Supports DHCP, Dynamic DNS, and multiple working modes including Modbus RTU/TCP for versatile industrial applications. - • **Universal Serial Connectivity:** Seamlessly convert RS232, RS422, and RS485 signals into Ethernet packets for ultimate device compatibility. - • **Power Over Ethernet Convenience:** Eliminate extra power cables with PoE support, simplifying installation and reducing clutter in your workspace. ## Overview The DTECH IOT9031 Serial to Ethernet Converter Adapter is a versatile 3-in-1 device server supporting RS232, RS422, and RS485 serial interfaces. It enables seamless bi-directional data transmission over 10/100 Mbps Ethernet with TCP/IP, DHCP, and Dynamic DNS support. Featuring multiple working modes including Modbus RTU/TCP, it supports baud rates up to 921,600 bps and offers Power Over Ethernet (PoE) for streamlined installation. Ideal for industrial, medical, ATM, POS, and security systems, this compact 393g device ensures reliable, high-speed network integration across diverse professional environments. ## Description Serial RS232/RS485/RS422 to TCP/IP Ethernet Device Server If you are trying to connect a serial device that is not close to a local computer, here is a rugged powered serial to ethernet device server for you to remotely access, control, and manage serial port device over TCP/IP network easily, regardless of the distance between the server and client computer. Computer networking serial server supports RS-232 and RS-485 working Independently at the same time, e.g. RS232 and RS485, or RS232 and RS422. (can’t do RS422 and RS485 at the same time) Dual Serial port server is well constructed with compact and protective solid steel enclosure for tabletop, wall mount or DIN rail mounting Important: pls make sure the IP of computer and our device server is in the same network segment, so it can work. RS-232, RS-485/422 3 in 1 serial port to 10/100 Base self-adaptive Ethernet interface (compatible with 802.3 protocol) full duplex RS422 and half duplex RS485 data communication Built-in Ethernet media transport layer (MAC) and physical layer (PHY) Support IPV4, not for IPV6 Baud rate: 300 - 921600 bps Modbus Gateway: Bi-directional Modbus RTU to Modbus TCP TCP Server, UDP Server, TCP Client, UDP Client working modes DHCP (Dynamic Host Configuration Protocol) Automatically obtain IP address, Dynamic DNS domain name access Power Option: external power adapter AC to DC, or PoE (power over Ethernet, pin 4/5 and 7/8) Electrostatic protection ESD: ±5kV wide voltage input range 12V～70V, output 1000mA Appliances ATM terminals, Credit card and check verification system, Data collection, Gas pump, Industrial and medical remote monitoring system, Point-of-sale terminal, Remote diagnostic, Remote metering, Security system, Ticketing/Vending/gaming machine, ... What’s Included: 1x Dual Serial Device Server 1x Power Supply 1x 9 pin Serial Cable ## Features - Bi-directional transparent transmission between serial data and Ethernet Packets: 3 in 1 Serial Device Server is designed with an RS232, RS422, or RS485 serial interface to a local area network to transmit serial data over Ethernet (TCP/IP) - Serial server box supports DHCP and Dynamic DNS function, 4 kinds of working mode: modbus TCP Client、TCP Server、UDP Client and UDP Server; bidirectional Modbus RTU/TCP - Serial port to ethernet adapter supports 10M/100M, full duplex / half duplex self-adaptive Ethernet interface (compatible with 802.3 protocol); baud rate ranges from 300 bps to 921600 bps; serial to ethernet adapter supports IPV4 - Wide voltage input 12V-70V; comes with a 12V power adapter, also supports POE (power over Ethernet, on pin 4/5 and 7/8 of POE switch); TX and RX indicators for easy troubleshooting - Dual serial port server supports RS-232 and RS-485 working at the same time, ideal for Industrial and medical remote monitoring system, ATM terminals, computer networking, POS, door controller, Data collection, security system, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08M42FL5W | | Best Sellers Rank | #951,308 in Electronics ( See Top 100 in Electronics ) #659 in Serial Adapters | | Brand | DTECH | | Brand Name | DTECH | | Colour | Black | | Compatible Devices | ATM Terminals, Point-of-sale Terminals, Security Systems | | Connector Type | USB Type C | | Current Rating | 1000 Milliamps | | Customer Reviews | 3.3 out of 5 stars 14 Reviews | | Finish Type | Matte | | Input Voltage | 240 Volts | | Item Package Quantity | 1 | | Item Weight Unit of Measure | 0.39 Kilograms | | Manufacturer | guangzhouditedianzikejiyouxiangongsi | | Manufacturer Part Number | IOT9031 | | Model Number | IOT9031 | | Nominal Power | 12 Watts | | Number of Items | 1 | | Number of Ports | 3 | | Power Plug Type | Type A - 2 pin (North American & Japanese) | | Product Finish Type | Matte | | Smart Home Compatibility | Not Smart Home Compatible | | Specific Uses For Product | PC | | UPC | 714131653331 | | Unit Count | 1.0 Count | ## Product Details - **Compatible Devices:** ATM Terminals, Point-of-sale Terminals, Security Systems - **Specific Uses For Product:** PC - **Connector Type:** USB Type C - **Colour:** Black - **Brand:** DTECH ## Images ![DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Image 1](https://m.media-amazon.com/images/I/61qpnW+zxhL.jpg) ![DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Image 2](https://m.media-amazon.com/images/I/71jB9mLwnpL.jpg) ![DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Image 3](https://m.media-amazon.com/images/I/71eJ9rlom5L.jpg) ![DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Image 4](https://m.media-amazon.com/images/I/71E1fs5oqLL.jpg) ![DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Image 5](https://m.media-amazon.com/images/I/51P1rFKTVgL.jpg) ## Questions & Answers **Q: Rs232 is working. however i can't get rs485 to work. i tried all different configurations and still couldn't get it work.any suggestions?** A: One thing that I found is that the RS232 is on Port 2 so presumably Port 1 is the RS485. **Q: Is IPV6 supported?** A: No, this powered serial device server box can't support IPV6, it supports IPV4. **Q: Has anyone been able to power it via poe? i have a unifi poe switch that powers everything, but this device.** A: Hi, the powered serial to Ethernet device server supports POE power supply, on pin 4/5 and 7/8 of POE switch. If any inconvenience caused, we're truly sorry for that, and if need any further assistance, you may contact us directly via the order page's "contact seller" button. And here some files for your reference to use the adapter, https://app.box.com/s/i6y6on52q588huvukn1uz6dy162ossiq **Q: /What is the operating temperature? there is no this important parameter. how can i buy it?** A: Hi, the serial to Ethernet adapter's operating temperature is from -4℉ to 176 ℉, relative humidity is from 5% to 95%. ## Customer Reviews ### ⭐⭐ Review *by A***R on 26 January 2026* ### ⭐⭐⭐⭐ Review *by D***T on 4 May 2022* ### ⭐ Review *by B***S on 20 January 2024* ## Frequently Bought Together - DTECH Serial to Ethernet Converter Adapter RS232 RS422 RS485 to TCP IP Device Server Supports DHCP DNS Modbus RTU/TCP 10/100M Power Over Ethernet POE - Usr-Tcp232-410S RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS (1) - USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS --- ## 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.us/products/348233727-dtech-serial-to-ethernet-converter-adapter-rs232-rs422-rs485-to](https://www.desertcart.us/products/348233727-dtech-serial-to-ethernet-converter-adapter-rs232-rs422-rs485-to) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*