--- product_id: 604392647 title: "Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply" brand: "waveshare" price: "SAR 351" currency: SAR in_stock: true reviews_count: 6 category: "Waveshare" url: https://www.desertcart.com.sa/products/604392647-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital store_origin: SA region: Saudi Arabia --- # RS485 interface with configurable address (1-255) 8 relay channels, 10A/250VAC max Multi-layer isolation for surge & noise protection Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply **Brand:** waveshare **Price:** SAR 351 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your industrial automation game with precision and protection! ## Quick Answers - **What is this?** Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply by waveshare - **How much does it cost?** SAR 351 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/604392647-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital) ## 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 - • **Smart Relay Automation:** Flash-on/off commands enable timed relay activation for dynamic, hands-free control scenarios. - • **Seamless RS485 Networking:** Configurable device address and cascading support let you build scalable, centralized control systems effortlessly. - • **Plug & Play DIN Rail Mount:** Compact ABS enclosure with easy installation and LED status indicators for instant operational feedback. - • **Powerful 8-Channel Relay Control:** Manage up to 8 devices with robust 10A switching capacity for industrial-grade reliability. - • **Rock-Solid Isolation & Protection:** Multi-isolation circuits including optocoupler, magnetic, and power supply isolation ensure ultra-stable, interference-free operation. ## Overview The Waveshare Industrial Modbus RTU 8-Channel Relay Module (D) is a rugged, DIN-rail mountable device designed for professional automation control. Featuring 8 relays rated up to 10A/250VAC, multi-layer isolation circuits for surge and noise immunity, and a configurable RS485 interface supporting up to 255 devices, it delivers reliable, scalable remote switching. Its onboard protections, including resettable fuses, TVS diodes, and optocoupler isolation, ensure stable operation in harsh industrial environments. Ideal for managers and engineers seeking dependable, centralized control with smart automation capabilities. ## Description Product Description Review: Great product does what it says - Does what it should, but the online documentation lacks clarity, and not just the normal start address of 0 or 1 (JBus/Modbus), but with a bit of playing its soon sorted. A nice touch is the LED indicators for the relays and DI's. Review: Un nome una garanzia - Il Modulo Relay Modbus RTU Waveshare 8 Canali è una soluzione eccellente per chi necessita di un controllo remoto affidabile di carichi elettrici tramite il protocollo Modbus RTU. Questo dispositivo offre versatilità e robustezza, rendendolo adatto per applicazioni in ambito industriale, automazione domestica e altri scenari che richiedono un controllo preciso e centralizzato. La qualità costruttiva del modulo è solida, con un design compatto che facilita l'integrazione in quadri elettrici o in sistemi esistenti. I relè offrono una capacità di commutazione di 10A a 250V AC o 30V DC, il che li rende sufficientemente potenti per controllare una vasta gamma di dispositivi, dalle luci ai motori, passando per le valvole. Durante l'uso, il modulo ha dimostrato una grande affidabilità. La comunicazione tramite RS485 è stabile, e i comandi vengono eseguiti con precisione. L'isolamento optoelettronico integrato protegge il modulo da interferenze elettromagnetiche e sovratensioni, garantendo un funzionamento sicuro e continuo anche in ambienti difficili. L'unico possibile svantaggio è che richiede una conoscenza di base del protocollo Modbus RTU e delle reti RS485 per essere configurato e utilizzato correttamente. Tuttavia, per gli utenti con un minimo di esperienza in questi campi, il modulo risulta abbastanza intuitivo. Il Modulo Relay Modbus RTU Waveshare 8 Canali è un dispositivo versatile, affidabile e ben progettato, ideale per chi cerca una soluzione robusta per il controllo remoto di carichi elettrici. Grazie alla sua facilità di configurazione e alla compatibilità con il protocollo Modbus, rappresenta una scelta eccellente per una vasta gamma di applicazioni di automazione. ## 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 resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic. Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit - Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability. Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control - 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. Multiple LEDs for indicating the MCU status and signal transceiving status ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CRKPYVSN | | Best Sellers Rank | 33,214 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 16 in Solid State Relays | | Brand | Waveshare | | Coil Voltage | 36 Volts | | Coil voltage | 36 Volts | | Connector Type | Wired connection | | Connector type | Wired connection | | Contact Current Rating | 10 Amps | | Country Of Origin | China | | Current Rating | 10 Amps | | Current rating | 10 Amps | | Customer Reviews | 4.2 out of 5 stars 29 Reviews | | Manufacturer | Waveshare | | Manufacturer Part Number | Modbus RTU Relay (D) | | Maximum Switching Voltage | 36 Volts | | Minimum Switching Voltage | 7 Volts | | Model Number | Modbus RTU Relay (D) | | Mounting Type | DIN Rail Mount | | Mounting type | DIN Rail Mount | | Operation Mode | Automatic | | Operation mode | Automatic | | Unit Count | 8.0 count | ## Product Details - **Connector type:** Wired connection - **Contact material:** Silver Alloy - **Contact type:** Normally Open - **Current rating:** 10 Amps - **Mounting type:** DIN Rail Mount ## Images ![Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Image 1](https://m.media-amazon.com/images/I/616lKobvudL.jpg) ![Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Image 2](https://m.media-amazon.com/images/I/61sd2ynH4gL.jpg) ![Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Image 3](https://m.media-amazon.com/images/I/71flV8c3Y6L.jpg) ![Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Image 4](https://m.media-amazon.com/images/I/71-tQj2AwEL.jpg) ![Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Image 5](https://m.media-amazon.com/images/I/71H7Zacx1-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product does what it says *by C***. on 11 March 2026* Does what it should, but the online documentation lacks clarity, and not just the normal start address of 0 or 1 (JBus/Modbus), but with a bit of playing its soon sorted. A nice touch is the LED indicators for the relays and DI's. ### ⭐⭐⭐⭐ Un nome una garanzia *by A***O on 10 August 2024* Il Modulo Relay Modbus RTU Waveshare 8 Canali è una soluzione eccellente per chi necessita di un controllo remoto affidabile di carichi elettrici tramite il protocollo Modbus RTU. Questo dispositivo offre versatilità e robustezza, rendendolo adatto per applicazioni in ambito industriale, automazione domestica e altri scenari che richiedono un controllo preciso e centralizzato. La qualità costruttiva del modulo è solida, con un design compatto che facilita l'integrazione in quadri elettrici o in sistemi esistenti. I relè offrono una capacità di commutazione di 10A a 250V AC o 30V DC, il che li rende sufficientemente potenti per controllare una vasta gamma di dispositivi, dalle luci ai motori, passando per le valvole. Durante l'uso, il modulo ha dimostrato una grande affidabilità. La comunicazione tramite RS485 è stabile, e i comandi vengono eseguiti con precisione. L'isolamento optoelettronico integrato protegge il modulo da interferenze elettromagnetiche e sovratensioni, garantendo un funzionamento sicuro e continuo anche in ambienti difficili. L'unico possibile svantaggio è che richiede una conoscenza di base del protocollo Modbus RTU e delle reti RS485 per essere configurato e utilizzato correttamente. Tuttavia, per gli utenti con un minimo di esperienza in questi campi, il modulo risulta abbastanza intuitivo. Il Modulo Relay Modbus RTU Waveshare 8 Canali è un dispositivo versatile, affidabile e ben progettato, ideale per chi cerca una soluzione robusta per il controllo remoto di carichi elettrici. Grazie alla sua facilità di configurazione e alla compatibilità con il protocollo Modbus, rappresenta una scelta eccellente per una vasta gamma di applicazioni di automazione. ### ⭐⭐⭐⭐⭐ Fonctionne correctement *by G***I on 22 December 2024* Ce module relay contrôlable via des ports série RS-232 / RS-485 est de bonne qualité de fabrication et fonctionne. Ce n'est certes pas le genre de modules le plus facile à utiliser mais la documentation est fournie sur le wiki et c'est un trait inhérent à ce genre d'appareils inspiré du domaine industriel. ## Frequently Bought Together - Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) with Digital Input and RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply - Waveshare USB to RS485 Converter with Protection Circuits, Compatible with TVs - 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.com.sa/products/604392647-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital](https://www.desertcart.com.sa/products/604392647-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-07-20*