--- product_id: 604392647 title: "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: "€ 116.46" currency: EUR in_stock: true category: "Waveshare" url: https://www.desertcart.at/products/604392647-industrial-modbus-rtu-8-ch-relay-module-d-with-digital store_origin: AT region: Austria --- # 10A High Contact Rating 8-Channel Relay Control Multi-layer Isolation Protection 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:** € 116.46 **Availability:** ✅ In Stock ## Summary > ⚙️ Power your industrial automation with precision and protection — don’t get left behind! ## Quick Answers - **What is this?** 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?** € 116.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/604392647-industrial-modbus-rtu-8-ch-relay-module-d-with-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 - • **Precision Relay Control:** Flash-on/off function with dedicated driver chip and flyback diode protection guarantees strong, stable switching performance. - • **Robust Surge & Spike Defense:** Built-in resettable fuse, TVS, and optocoupler isolation ensure lightning-proof, over-voltage, and electrostatic protection. - • **Stable & Isolated Power Supply:** Onboard unibody power and magnetic isolation deliver reliable voltage without extra power sources, minimizing downtime. - • **Seamless Multi-Device Cascading:** Configurable device address (1~255) enables effortless RS485 bus expansion for complex industrial setups. - • **User-Friendly Installation & Monitoring:** DIN rail mount with multiple LED indicators for real-time MCU and signal status, designed for quick, safe deployment. ## Overview The Waveshare Industrial Modbus RTU 8-Channel Relay Module (D) is a high-performance automation component featuring configurable RS485 addressing, robust multi-layer isolation circuits, and a wide 7~36V power supply range. Designed for industrial environments, it supports up to 10A contact current with advanced surge protection and easy DIN rail mounting, ensuring reliable, scalable, and safe relay control for professional automation systems. ## Description Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply : desertcart.co.uk: Business, Industry & Science ## 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 | 49,294 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 18 in Solid State Relays | | Brand | Waveshare | | Coil Voltage | 36 Volts | | Connector Type | Wired connection | | Contact Current Rating | 10 Amps | | Country Of Origin | China | | Current Rating | 10 Amps | | Customer Reviews | 4.2 4.2 out of 5 stars (31) | | 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 | | Number of Items | 1 | | Number of Packs | 1 | | Operation Mode | Automatic | | Unit Count | 8.0 count | ## Product Details - **Brand:** Waveshare - **Connector type:** Wired connection - **Current rating:** 10 Amps - **Mounting type:** DIN Rail Mount - **Operation mode:** Automatic ## Images ![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) ## 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.at/products/604392647-industrial-modbus-rtu-8-ch-relay-module-d-with-digital](https://www.desertcart.at/products/604392647-industrial-modbus-rtu-8-ch-relay-module-d-with-digital) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-23*