--- product_id: 395129154 title: "Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial" brand: "waveshare" price: "7602 kr" currency: ISK in_stock: true reviews_count: 8 category: "Waveshare" url: https://www.desertcart.is/products/395129154-industrial-serial-server-rs485-to-rj45-ethernet-module-tcp-ip store_origin: IS region: Iceland --- # 9~24V wide power range 10/100M Ethernet auto-negotiation Rail-mount flame-retardant case Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial **Brand:** waveshare **Price:** 7602 kr **Availability:** ✅ In Stock ## Summary > 🔗 Connect Smarter, Scale Faster — Your Industrial IoT Powerhouse ## Quick Answers - **What is this?** Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial by waveshare - **How much does it cost?** 7602 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/395129154-industrial-serial-server-rs485-to-rj45-ethernet-module-tcp-ip) ## 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 - • **Compact & Durable Design:** Rail-mountable, flame-retardant casing built for harsh industrial environments (-40℃ to 85℃). - • **Effortless Network Management:** Web browser config, DHCP, DNS & NTP support for dynamic IP and precise time sync. - • **Plug & Play Power Flexibility:** Wide 9~24V DC input with screw terminals ensures easy, reliable installation anywhere. - • **Robust & Flexible Communication:** Supports TCP server/client, UDP, multicast & multi-host roll-polling to eliminate crosstalk. - • **Seamless Industrial IoT Integration:** Multi-protocol gateway combining RS485, Modbus, MQTT & JSON for ultimate connectivity. ## Overview The Industrial Serial Server RS485 to RJ45 Ethernet Module by Waveshare is a compact, rail-mountable IoT gateway designed for industrial environments. It supports bi-directional transparent data transmission between RS485 and Ethernet with multi-protocol compatibility including Modbus and MQTT. Featuring 10/100M Ethernet, wide 9~24V power input, and robust communication modes (TCP/UDP/multicast), it ensures reliable, flexible network integration. Its flame-retardant case and wide operating temperature range make it ideal for demanding industrial 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 ports, uses screw terminals for power input, supports 9~24V wide range power supply. 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.etc. 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 Online Document/How to use: //bit.ly/3rWrjyz Package Content RS485 TO ETH (B) x1 Review: Great device! - Immediately there's one problem, and I don't understand why Chinese manufacturers do this: The IP address is set statically at 192.168.1.254 rather than using DHCP. Even when set to DHCP, it does not properly pull DNS servers from DHCP and has it set statically to 192.168.1.3, which doesn't matter much because it doesn't need DNS, but still. It's such a weird default that the rest of the world does not use. Ethernet devices should start with DHCP, and they should always pull DNS from DHCP unless set statically after DHCP config. After that, everything is excellent. Just beware that the ground plug on top of this is not the same as the negative of the input voltage. Make sure your modbus sensor/device is powered the same way this is powered. Honestly, a great device and exactly what I needed for testing a modbus TCP implementation. Review: Great modbus to ethernet Gateway - Perfect solution for my home automation need. This interface only took a few minutes to get programmed and communicating properly and has been holding up great for several months in a garage. ## Features - This is an RS485 device data acquisitor / IoT gateway designed for the industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc. Bi-directional transparent data transmission between RS485 and Ethernet. - Support Rail-mount :easy to combine multi rail-mounted serial server together, more freely. Support Modbus gateway: suitable for Modbus gridding upgrade, can be used with 3D configuration software. Support NTP protocol: getting network time info for serial output or data upload. - Multi communication modes: supports TCP server / TCP client / UDP mode / UDP multicast. Multi configuration methods: supports Web browser configuration, obtaining dynamic IP via DHCP,DNS protocol connected domain server address. MQTT/JSON to Modbus: more flexible conversion between different protocols. - Multi hosts roll-polling support: different network devices will be identified and responsed respectively, no more crosstalk issue while communicating with multi network devices - User-defined heartbeat/registration packet: easy for cloud communication and device identification. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MBW9WFL | | Best Sellers Rank | #114 in Serial Adapters | | Brand | waveshare | | Color | RS485 TO ETH (B) | | Compatible Devices | Industrial Devices, Modbus Devices, Serial Devices | | Customer Reviews | 4.5 out of 5 stars 29 Reviews | | Data Link Protocol | Ethernet | | Data Transfer Rate | 100 megabits_per_second | | Hardware Interface | Ethernet | | Item Dimensions L x W x H | 3.43"L x 1.42"W x 2.32"H | | Item Highlight | Support Rail-Mount /Modbus Gateway, TCP Server / TCP Client / UDP Mode / UDP Multicast Multi Communication Modes | | Item Weight | 0.01 kg | | Manufacturer | Waveshare | | Mfr Part Number | RS485 to ETH RJ45 (B) | | Model Number | RS485 to ETH RJ45 (B) | | Number of Items | 1 | | Number of Packs | 1 | | Product Dimensions | 3.43"L x 1.42"W x 2.32"H | | Unit Count | 1 Count | ## Product Details - **Brand:** waveshare - **Color:** RS485 TO ETH (B) - **Compatible Devices:** Industrial Devices, Modbus Devices, Serial Devices - **Data Link Protocol:** Ethernet - **Data Transfer Rate:** 100 megabits_per_second - **Hardware Interface:** Ethernet - **Item Weight:** 0.01 kg - **Number of Packs:** 1 - **Product Dimensions:** 3.43"L x 1.42"W x 2.32"H - **Unit Count:** 1 Count ## Images ![Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial - Image 1](https://m.media-amazon.com/images/I/61DKLzjxnQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great device! *by R***T on May 6, 2026* Immediately there's one problem, and I don't understand why Chinese manufacturers do this: The IP address is set statically at 192.168.1.254 rather than using DHCP. Even when set to DHCP, it does not properly pull DNS servers from DHCP and has it set statically to 192.168.1.3, which doesn't matter much because it doesn't need DNS, but still. It's such a weird default that the rest of the world does not use. Ethernet devices should start with DHCP, and they should always pull DNS from DHCP unless set statically after DHCP config. After that, everything is excellent. Just beware that the ground plug on top of this is not the same as the negative of the input voltage. Make sure your modbus sensor/device is powered the same way this is powered. Honestly, a great device and exactly what I needed for testing a modbus TCP implementation. ### ⭐⭐⭐⭐⭐ Great modbus to ethernet Gateway *by R***. on June 22, 2026* Perfect solution for my home automation need. This interface only took a few minutes to get programmed and communicating properly and has been holding up great for several months in a garage. ### ⭐⭐⭐⭐⭐ I wish it supported 312500bps or more *by T***I on June 25, 2026* IT does the job, but it doesn't support speeds such as other converters. ## Frequently Bought Together - 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 - GUETNEU Terminal Block, Rail Type Voltage Terminal, Rail Combined Terminal Block - T&G 10 Pieces DIN Rail Slotted Aluminum RoHS 8" Inches Long 35mm Wide 7.5mm High --- ## 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.is/products/395129154-industrial-serial-server-rs485-to-rj45-ethernet-module-tcp-ip](https://www.desertcart.is/products/395129154-industrial-serial-server-rs485-to-rj45-ethernet-module-tcp-ip) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-10-27*