--- product_id: 382797778 title: "Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure" brand: "waveshare" price: "334.59 DT" currency: TND in_stock: true reviews_count: 5 category: "Waveshare" url: https://www.desertcart.tn/products/382797778-industrial-modbus-rtu-8-ch-relay-module-with-rs485-interface store_origin: TN region: Tunisia --- # 10A high-load relay rating RS485 multi-device cascade Multi-layer surge & isolation protection Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure **Brand:** waveshare **Price:** 334.59 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Power your smart automation with industrial-grade precision and bulletproof reliability! ## Quick Answers - **What is this?** Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure by waveshare - **How much does it cost?** 334.59 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/382797778-industrial-modbus-rtu-8-ch-relay-module-with-rs485-interface) ## 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 High-Load Switching:** Handles up to 10A at 250VAC/30VDC, perfect for demanding automation tasks without compromise. - • **Unmatched Signal Integrity:** Advanced onboard magnetic and optocoupler isolation ensures ultra-reliable, interference-free operation in noisy environments. - • **Seamless Multi-Device Networking:** Configurable RS485 address (1-255) lets you cascade multiple modules effortlessly for scalable industrial control. - • **Plug & Play Industrial-Grade Design:** DIN rail mount with ABS enclosure and intuitive LED indicators for quick installation and real-time status monitoring. - • **Built-In Surge & Electrostatic Defense:** Integrated TVS and reverse-proof circuits protect your investment from voltage spikes and wiring errors. ## Overview The Waveshare Industrial Modbus RTU 8-channel Relay Module is a rugged, DIN rail-mountable device designed for scalable RS485 bus automation. Featuring configurable device addressing, high-current 10A relays, and multi-layer isolation including magnetic, optocoupler, and TVS protection, it ensures stable, interference-resistant operation. Its ABS enclosure and LED status indicators make installation and monitoring effortless, ideal for professional-grade industrial and home automation setups. ## Description Features Configurable device address (1~255), multi devices can be cascaded on RS485 bus Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection High quality relay, contact rating: ≤10A 250VAC/30VDC Rail-mounted ABS plastic enclosure, easy to install, safe to use 3 LEDs for indicating the MCU status and signal transceiving status Specifications Power supply voltage: 5V Communication interface: RS485 Baudrate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 Default communication format: 9600, N, 8, 1 Relay channels: 8 Contact form: 1NO 1NC Communication protocol: Standard Modbus RTU protocol RS485 address: 1~255 RS485 terminal protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads) LED indicators: STA: MCU indicator, keep flashing when the MCU normally working TXD: TX indicator, light up when sending data RXD: RX indicator, light up when receiving data PACKAGE CONTENT Modbus RTU Relay x1 Power adapter US plug 5V/2A 5.5/2.1 x1 Power adapter EU head x1 Review: This works pretty awesome for home automation. - This works pretty awesome for home automation. Plugged into a raspberry pi running home assistant to control pumps for hydronic system. Review: Simple - Muy fácil de usar, es conectarlo al bus rs485 y a la alimentación y ya se puede empezar a probar. Con el tiempo veremos la fiabilidad, pero de momento bien. ## Features - Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically - Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption - Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, llgthningproof & anti-electrostatic. Onboard Optocoupler isolation, prevent interference from external high-voltage circuit connected to the relay - Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤10A 250VAC/30VDC - Rail-mounted ABS plastic enclosure, easy to install, safe to use. 3 LEDs for indicating the MCU status and signal transceiving status ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083J24HCM | | Best Sellers Rank | #8,738 in Computers ( See Top 100 in Computers ) #8 in Barebone PCs | | Brand | Waveshare | | Brand Name | Waveshare | | Coil Voltage | 5 Volts | | Connector Type | Clamp | | Connector type | Clamp | | Contact Current Rating | 10 Amps | | Contact Material | Tungsten | | Contact Type | Normally Open | | Contact material | Tungsten | | Contact type | Normally Open | | Current Rating | 10 Amps | | Current rating | 10 Amps | | Customer Reviews | 4.8 out of 5 stars 27 Reviews | | Item Weight | 0.01 Kilograms | | Manufacturer | Waveshare | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 250 Volts | | Minimum Switching Voltage | 30 Volts (DC) | | Model | Modbus RTU Relay (EN) | | Mounting Type | DIN Rail Mount | | Mounting type | DIN Rail Mount | | Number of Terminals | 2 | | Operation Mode | Automatic | | Part Number | Modbus RTU Relay (EN) | | Specification Met | CE, UL | | UPC | 614961956988 | | Unit Count | 8 Count | | Wattage | 600 watts | ## Product Details - **Connector Type:** Clamp - **Contact Material:** Tungsten - **Contact Type:** Normally Open - **Current Rating:** 10 A - **Mounting Type:** Rail Mount ## Images ![Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure - Image 1](https://m.media-amazon.com/images/I/61T10dJIEdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This works pretty awesome for home automation. *by B***D on 20 June 2025* This works pretty awesome for home automation. Plugged into a raspberry pi running home assistant to control pumps for hydronic system. ### ⭐⭐⭐⭐⭐ Simple *by T***I on 26 February 2023* Muy fácil de usar, es conectarlo al bus rs485 y a la alimentación y ya se puede empezar a probar. Con el tiempo veremos la fiabilidad, pero de momento bien. ### ⭐⭐⭐⭐⭐ Works *by R***Y on 9 August 2022* Works right out of the box Also lots of support online. Even examples. ## Frequently Bought Together - Waveshare Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure - USB to RS485 Converter Industrial Adapter Original FT232RL and SP485EEN Fast Communication Embedded Protection Circuits Resettable Fuse ESD Protection - RS485 CAN HAT for Raspberry Pi 5/4B/3B+/3B/2B/B+/Zero/Zero W/WH/Zero 2W, Long-Distance Communication via RS485/CAN Function Onboard CAN Controller MCP2515 via SPI Interface Transceiver SIT65HVD230DR --- ## 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/382797778-industrial-modbus-rtu-8-ch-relay-module-with-rs485-interface](https://www.desertcart.tn/products/382797778-industrial-modbus-rtu-8-ch-relay-module-with-rs485-interface) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-01*