--- product_id: 619066527 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: "€ 102.16" currency: EUR in_stock: true category: "Waveshare" url: https://www.desertcart.at/products/619066527-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital store_origin: AT region: Austria --- # Supports 7~36V power supply 8-channel relay control Multi-layer isolation 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:** € 102.16 **Availability:** ✅ In Stock ## Summary > ⚙️ Power your automation with precision and protection — don’t get left behind! ## 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?** € 102.16 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/619066527-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 - • **Dynamic Relay Control:** Flash-on/flash-off function allows timed relay activation for precise automation workflows. - • **Robust Surge & Spike Defense:** Built-in resettable fuse, TVS, and optocoupler isolation ensure lightning-proof, over-current, and electrostatic protection. - • **Plug & Play Industrial Design:** DIN rail mount with ABS enclosure and LED indicators for quick installation and real-time status monitoring. - • **Seamless Multi-Device Cascading:** Configurable device address (1~255) enables effortless RS485 bus expansion for complex industrial setups. - • **High-Performance Signal Isolation:** Magnetical and optocoupler isolation deliver ultra-reliable, low-interference operation in noisy environments. ## Overview The Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) is a high-reliability automation component featuring 8 relay channels, multi-layer isolation circuits, and RS485 interface. It supports a wide 7~36V power supply range, configurable device addressing for scalable networks, and advanced surge protection, making it ideal for professional industrial control systems requiring robust, interference-resistant relay management. ## 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.com: Industrial & Scientific ## 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 | #135,100 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in IO Modules | | Brand Name | waveshare | | Coil Voltage | 36 volts | | Connector Type | Screw | | Contact Current Rating | 10 A | | Contact Material | Steel | | Contact Type | Normally Closed | | Current Rating | 2 A | | Customer Reviews | 4.2 4.2 out of 5 stars (29) | | Included Components | Modbus RTU Relay (D) x1 Screwdriver x1 | | Manufacturer | Waveshare | | Maximum Switching Current | 10 A | | Maximum Switching Voltage | 36 volts | | Minimum Switching Voltage | 7 volts_of_direct_current | | Model | Modbus RTU Relay (D) | | Mounting Type | DIN Rail Mount | | Operation Mode | Automatic | | Part Number | Modbus RTU Relay (D) | | Specification Met | Modbus Rtu Relay (D) | | Unit Count | 8 Count | ## Product Details - **Connector Type:** Screw - **Contact Material:** Steel - **Contact Type:** Normally Closed - **Current Rating:** 2 A - **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) ## 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/619066527-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital](https://www.desertcart.at/products/619066527-waveshare-industrial-modbus-rtu-8-ch-relay-module-d-digital) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-09-19*