--- product_id: 503869615 title: "Industrial Serial Server RS485 to RJ45 Ethernet Module with POE Function, Modbus MQTT Gateway,TCP/IP to Serial, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet" brand: "waveshare" price: "242.16 DT" currency: TND in_stock: true reviews_count: 1 category: "Waveshare" url: https://www.desertcart.tn/products/503869615-industrial-serial-server-rs485-to-rj45-ethernet-module-with-poe store_origin: TN region: Tunisia --- # Multi-protocol Ethernet support POE-enabled power delivery Rail-mount industrial design Industrial Serial Server RS485 to RJ45 Ethernet Module with POE Function, Modbus MQTT Gateway,TCP/IP to Serial, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet **Brand:** waveshare **Price:** 242.16 DT **Availability:** ✅ In Stock ## Summary > ⚡ Power your industrial IoT with seamless, secure, and smart connectivity! ## Quick Answers - **What is this?** Industrial Serial Server RS485 to RJ45 Ethernet Module with POE Function, Modbus MQTT Gateway,TCP/IP to Serial, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet by waveshare - **How much does it cost?** 242.16 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/503869615-industrial-serial-server-rs485-to-rj45-ethernet-module-with-poe) ## Best For - waveshare enthusiasts ## Why This Product - Trusted waveshare brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Industrial Build:** Rail-mountable, flame-retardant casing designed for harsh environments and easy integration. - • **Advanced Modbus & MQTT Gateway:** Native support for Modbus RTU/TCP, JSON, and MQTT protocols for next-gen IoT connectivity. - • **Multi-Mode Network Flexibility:** Supports TCP server/client, UDP, and multicast modes for versatile industrial networking. - • **Power Over Ethernet (PoE) Ready:** Simplify installations with integrated PoE, eliminating extra power cables and clutter. - • **Seamless RS485 to Ethernet Bridge:** Bi-directional transparent data transmission ensures zero lag and flawless device communication. ## Overview The Waveshare RS485 to RJ45 Ethernet Module is a compact, industrial-grade serial server featuring PoE support and multi-protocol communication modes. Designed for harsh environments, it enables bi-directional transparent data transmission between RS485 and Ethernet networks, supports Modbus and MQTT gateways, and offers flexible configuration via web browser or cloud. Ideal for IoT, industrial automation, and intelligent monitoring applications. ## Description Overview This is a RS485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc. The module features RS485 and Ethernet port(POE function is optional), uses screw terminals for power input. Rail-mount flame-retardant case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring... Specifications (1) Primary Introduction Product Type: Serial server, Modbus Gateway, MQTT Gateway Basic Function: Bi-directional transparent data transmission between RS485 and Ethernet Communication interface : RS485 port x 1, Ethernet port x 1 Power supply : 9 ~ 24V DC screw terminal (2) Communication Ethernet: common network port,10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection Serial port: RS485 (3) Serial specification Baudrate: 300 ~ 115200 bps Parity bit: none, odd, even, mark, space Data bit: 5 ~ 9 bits (4) Software Protocol: ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS Configuration: host, web browser, device management functions library Communication method: TCP/IP direct communication, VCOM Operating mode: TCP server, TCP client (coexisting with TCP server), UDP, UDP multicas (5) Environment requirement Operating temperature: -40℃ ~ 85℃ Storage temperature: -45℃ ~ 125℃ Humidity range: 5% ~ 95% relative humidity Dimensions : L x W x H--- 87x 36 x 59 mm Development Resource/Online Instruction: n9.cl/6fw8v Package Content RS485 TO POE ETH (B) x1 Review: Couldn't get it to reply to any traffic - It doesn't output any traffic my default, doesn't seem to use DHCP by default either, going on the website and trying to ping the default IP doesn't seem to generate traffic, basically it's very badly setup as any new device should just use DHCP to get an IP and be easy to find on your router of choice... It's too bad as I was really hoping to interface this with Home Assistant. Also it came with a rattling noise and I had to open the box to reconnect the daughter board that isn't held well by the box it seems. Sending it back... UPDATE: Bumping to 2 stars. While waiting to send it back, I've shorted the 2 pins to reset the device and the default IP isn't 192.168.1.200 but 192.168.1.254 after doing that. No idea what the original IP was, it wouldn't show on my router, but the documentation is garbage and somehow it wouldn't connect before a reset, meaning something wasn't default after shipping? Also, for future adventurers of cheapo solutions: - Green LED: connected to ethernet/PoE. - Yellow: Link working. - Blue: Active connection on port 4196 which is the only port open as far as nmap can tell you. I have firmware V1. 452, I don't see the NTP option, DHCP doesn't configure the DNS, no MQTT visible, etc. ## Features - RS485 to RJ45 Ethernet Module with POE Function, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet. Rail-mount support, easy to combine multi rail-mounted serial server together, more freely. - Multi communication modes, supports TCP server / TCP client / UDP mode / UDP multicast. Multi hosts roll-polling support: different network devices will be identified and responsed respectively, no more crosstalk issue while communicating with multi network devices. Multi configuration methods: supports Web browser configuration, obtaining dynamic IP via DHCP,DNS protocol connected domain server address. - Support Modbus gateway function,suitable for Modbus gridding upgrade, can be used with 3D configuration software. Support Modbus RTU to Modbus TCP. It can support storage-type Modbus, and can automatically collect device data and store it; it also supports a non-storage mode Modbus gateway. Support JSON to Modbus RTU and 645-meter protocol, support HTTP POST, and HTTP GET format to upload data. - Support custom heartbeat package and registration package function: It is convenient to communicate with the cloud and identify devices. It supports the function that password authentication is required to establish a connection through TCP to ensure connection security. It supports the function of data submission and delivery in HTTP mode, and the cloud can directly use the HTTP GET command to interact with the serial port data of the device. - Support Web browser configuration, support DHCP to obtain IP dynamically, and DNS protocol to connect domain name server address. Support cloud remote search for devices, the configuration of device parameters, and device program upgrades. Support remote viewing of the device's TCP connection status, and serial port data sending and receiving status through software. The virtual serial port supports the data monitoring function. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BJL8YNXP | | Best Sellers Rank | #1,730 in Serial Adapters | | Brand | waveshare | | Built-In Media | 1x Industrial Serial Server | | Color | RS485 TO POE ETH (B) | | Compatible Devices | Industrial sensors, PLCs, IoT devices with RS485 or Ethernet interface | | Customer Reviews | 2.0 out of 5 stars 1 Review | | Item Dimensions L x W x H | 3.43"L x 1.42"W x 2.32"H | | Manufacturer | Waveshare | | Mfr Part Number | RS485 to ETH with POE-B Ver | | Model Number | RS485 to ETH with POE-B Ver | | Number of Items | 1 | | Product Dimensions | 3.43"L x 1.42"W x 2.32"H | ## Product Details - **Brand:** waveshare - **Connectivity Technology:** Ethernet - **Included Components:** 1x Industrial Serial Server - **Model Name:** RS485 TO ETH (B) - **Operating System:** Linux ## Images ![Industrial Serial Server RS485 to RJ45 Ethernet Module with POE Function, Modbus MQTT Gateway,TCP/IP to Serial, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet - Image 1](https://m.media-amazon.com/images/I/51t3+YpWLWL.jpg) ## Customer Reviews ### ⭐⭐ Couldn't get it to reply to any traffic *by A***X on February 8, 2023* It doesn't output any traffic my default, doesn't seem to use DHCP by default either, going on the website and trying to ping the default IP doesn't seem to generate traffic, basically it's very badly setup as any new device should just use DHCP to get an IP and be easy to find on your router of choice... It's too bad as I was really hoping to interface this with Home Assistant. Also it came with a rattling noise and I had to open the box to reconnect the daughter board that isn't held well by the box it seems. Sending it back... UPDATE: Bumping to 2 stars. While waiting to send it back, I've shorted the 2 pins to reset the device and the default IP isn't 192.168.1.200 but 192.168.1.254 after doing that. No idea what the original IP was, it wouldn't show on my router, but the documentation is garbage and somehow it wouldn't connect before a reset, meaning something wasn't default after shipping? Also, for future adventurers of cheapo solutions: - Green LED: connected to ethernet/PoE. - Yellow: Link working. - Blue: Active connection on port 4196 which is the only port open as far as nmap can tell you. I have firmware V1. 452, I don't see the NTP option, DHCP doesn't configure the DNS, no MQTT visible, etc. ## Frequently Bought Together - Industrial Serial Server RS485 to RJ45 Ethernet Module with POE Function, Modbus MQTT Gateway,TCP/IP to Serial, Bi-Directional Transparent Data Transmission Between RS485 and Ethernet - waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes - USB to RS485 Converter Industrial Adapter Original FT232RL and SP485EEN Fast Communication Embedded Protection Circuits Resettable Fuse ESD Protection --- ## 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.tn/products/503869615-industrial-serial-server-rs485-to-rj45-ethernet-module-with-poe](https://www.desertcart.tn/products/503869615-industrial-serial-server-rs485-to-rj45-ethernet-module-with-poe) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-21*