--- product_id: 395129154 title: "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" brand: "waveshare" price: "€ 57.05" currency: EUR in_stock: true reviews_count: 7 category: "Waveshare" url: https://www.desertcart.hr/products/395129154-waveshare-ethernet-industrial-serial-server-rs485-to-rj45-ethernet-module store_origin: HR region: Croatia --- # Wide 9~24V power input Multi-protocol gateway Rail-mount industrial design 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 **Brand:** waveshare **Price:** € 57.05 **Availability:** βœ… In Stock ## Summary > 🌐 Power your industrial IoT with Waveshare’s all-in-one Ethernet serial gateway! ## Quick Answers - **What is this?** 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 by waveshare - **How much does it cost?** € 57.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/395129154-waveshare-ethernet-industrial-serial-server-rs485-to-rj45-ethernet-module) ## 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 - β€’ **Dynamic Network Modes:** Supports TCP Server/Client, UDP, and multicast for versatile connectivity. - β€’ **Robust Industrial-Grade Build:** Rail-mountable, flame-retardant casing built for harsh environments. - β€’ **Effortless Web-Based Configuration:** Intuitive browser UI with DHCP/DNS support for quick setup and management. - β€’ **Seamless Multi-Protocol Integration:** Combine RS485, Modbus, MQTT & JSON for ultimate IoT flexibility. - β€’ **Precision Time Sync & Multi-Host Support:** NTP protocol and roll-polling ensure synchronized, crosstalk-free communication. ## Overview The Waveshare Ethernet Industrial Serial Server RS485 to RJ45 module is a compact, rail-mountable IoT gateway designed for industrial environments. It supports multiple communication protocols including Modbus, MQTT, and JSON, enabling bi-directional transparent data transmission between RS485 and Ethernet. With flexible TCP/IP modes, wide voltage input (9-24V), and a user-friendly web interface, it ensures reliable, scalable, and easy-to-manage connectivity for intelligent instrument monitoring and industrial data acquisition. ## 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: Working well, though rx/tx indication a bit confusing - I'm working on a personal project with the Modbus functionality. The device I'm working on was tested with the Serial to RS485 dongle and working fine. I added the RS485 to the RJ45 Ethernet Module (waveshare), enabled the Modbus TCP to RTU mode, set the device address, and sent the following command: `modbus 192.168.6.35:2020 -s213 h@13` The "waveshare" is able to transmit data to my device, and my device successfully processes the command responding with the correct Modbus response: [23:50:09][D][uart_debug:114]: >> D5:03:02:08:27:CF:8C However, the "waveshare" device, seems, to either have a defective RX port or can not transmit the response back. I tried modbus_cli and ModbusMechanics. Both fail with the "waveshare" device but work with the USB458 dongle. *Correction*: Looks like it was a subtle bug with the particular Modbus library on my device and/or the device(s). Even though the USB dongle works correctly, another device from a different vendor behaves the same way. Setting 2 stop bits helped. I assume the "waveshare" device would work perfectly with this setup. Sorry for the initial negative review. Review: Reliable and Easy to Deploy - Minimal Security - We have some devices using MODBUS-RTU and have employed these to remotely monitor those devices across our network to the NOC via MODBUS-TCP as a basic gateway. They are compact and easily configured, but lack TLS or any other network security that some networks may require. ## 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 | #118 in Serial Adapters | | Brand | waveshare | | Color | RS485 TO ETH (B) | | Compatible Devices | Industrial Devices, Modbus Devices, Serial Devices | | Customer Reviews | 4.4 out of 5 stars 21 Reviews | | Item Weight | 0.01 Kilograms | | Manufacturer | Waveshare | | Mfr Part Number | RS485 to ETH RJ45 (B) | | Model Number | RS485 to ETH RJ45 (B) | | Number of Packs | 1 | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1 Count | ## Product Details - **Brand:** waveshare - **Color:** RS485 TO ETH (B) - **Connector Type:** RJ45 - **Item Weight:** 0.01 Kilograms - **Item dimensions L x W x H:** 2.71 x 2.48 x 0.98 inches ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61DKLzjxnQL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/61mqHN7xD0L.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/61sRfgEi0RL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/61-OIVXxOqL.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/61z-JHfVsNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Working well, though rx/tx indication a bit confusing *by Y***V on February 24, 2024* I'm working on a personal project with the Modbus functionality. The device I'm working on was tested with the Serial to RS485 dongle and working fine. I added the RS485 to the RJ45 Ethernet Module (waveshare), enabled the Modbus TCP to RTU mode, set the device address, and sent the following command: `modbus 192.168.6.35:2020 -s213 h@13` The "waveshare" is able to transmit data to my device, and my device successfully processes the command responding with the correct Modbus response: [23:50:09][D][uart_debug:114]: <<< D5:03:00:0D:00:01:07:DD [23:50:09][D][uart_debug:114]: >>> D5:03:02:08:27:CF:8C However, the "waveshare" device, seems, to either have a defective RX port or can not transmit the response back. I tried modbus_cli and ModbusMechanics. Both fail with the "waveshare" device but work with the USB458 dongle. *Correction*: Looks like it was a subtle bug with the particular Modbus library on my device and/or the device(s). Even though the USB dongle works correctly, another device from a different vendor behaves the same way. Setting 2 stop bits helped. I assume the "waveshare" device would work perfectly with this setup. Sorry for the initial negative review. ### ⭐⭐⭐⭐⭐ Reliable and Easy to Deploy - Minimal Security *by J***H on November 8, 2025* We have some devices using MODBUS-RTU and have employed these to remotely monitor those devices across our network to the NOC via MODBUS-TCP as a basic gateway. They are compact and easily configured, but lack TLS or any other network security that some networks may require. ### ⭐⭐⭐⭐⭐ Easy web UI to help configuration *by A***Y on March 18, 2025* Works great. The web UI is good, so dip switches are required to change baud rate, and you can do all sorts of configuration with the config page. The default addr is 192.168.1.254, it was unfortunate the same as my gateway, so I had to hard wire to it to change the IP address. Other than that, it is very easy to use. I hooked up a thermostat and humidity sensor to it and created an IOT app. ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/395129154-waveshare-ethernet-industrial-serial-server-rs485-to-rj45-ethernet-module](https://www.desertcart.hr/products/395129154-waveshare-ethernet-industrial-serial-server-rs485-to-rj45-ethernet-module) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-21*