--- product_id: 809253341 title: "DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1)" brand: "eletechsup" price: "$514.90" currency: USD in_stock: true category: "Eletechsup" url: https://www.desertcart.ec/products/809253341-dc-24v-32ch-modbus-rtu-rs485-relay-switch-board-uart store_origin: EC region: Ecuador --- # 10A max load power 32-channel Modbus RTU control DIN rail mount ready DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) **Brand:** eletechsup **Price:** $514.90 **Availability:** ✅ In Stock ## Summary > ⚡ Master your automation with power and precision! ## Quick Answers - **What is this?** DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) by eletechsup - **How much does it cost?** $514.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/809253341-dc-24v-32ch-modbus-rtu-rs485-relay-switch-board-uart) ## Best For - eletechsup enthusiasts ## Why This Product - Trusted eletechsup brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Command Your Space:** Supports 32 relay channels with versatile MODBUS RTU commands for ultimate control. - • **Seamless Integration:** Fits standard DIN35 and C45 rails for quick, professional installation. - • **Expand Your Automation:** Compatible with up to 64 devices in parallel, perfect for scalable smart systems. - • **Flame-Retardant Safety:** VO grade insulation ensures reliable, fire-safe operation in demanding environments. - • **Power Up with Confidence:** Handles up to 10A at 250VAC for robust industrial and smart home automation. ## Overview The DC 24V 32ch Modbus RTU RS485 Relay Switch Board is a high-capacity, DIN rail-mountable module designed for professional-grade automation. Supporting 32 relay channels with 10A max load per channel, it offers flame-retardant VO insulation and versatile MODBUS RTU command compatibility, making it ideal for industrial PLCs, smart homes, and scalable control systems. ## Description Package inlcuded:DC 12V 32 Channels R-S485 Modb us RTU Relay ModuleDescription:1: 24V (24V version).2: (12V version) Standby current (all relays closed) 8MA, all 32 relay open 1050mA3: ''open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands4: MODBUS RTU command5: Under the ''Delay'' command ,the maximum delay is 255 seconds6 MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter.7 Under the MODBUS command mode, it can support up to 64 devices in parallel8 Size: 180 * 90 * 20mm(Only Board);195 * 115 * 43mm(with DIN Rail Box)9 Weight: 296g (Only Board);475g ( with DIN Rail Box)10 Maximum load: 10A / 250VAC, 10A / 125VACDIN rail Box parameters(DIN Rail Box Version):Product model: UM100Color: greenWidth: suitable for PCB board width UM100(100mm)Insulation grade: flame-retardant VO gradeBackplane length: suitable for 190 mm PCB boardsNet weight: 170gInstallation: DIN35 and C45 railFor more information, please contact meApplicationAutomated industry PLCSmart Home,Home Automation ,Wiser Home;IP PTC CameraSecurity MonitoringIdentification system;Motor FW & BW​LED Home lightingDoor Lockdiy electronicTypical applications:MODBUS RTU command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control ## Features - Maximum load: 10A / 250VAC, 10A / 125VAC - Width: suitable for PCB board width UM100(100mm) - Insulation grade: flame-retardant VO grade - Backplane length: suitable for 190 mm PCB boards - Installation: DIN35 and C45 rail ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BQYMBY2G | | Brand | eletechsup | | Brand Name | eletechsup | | Coil Voltage | 12 Volts | | Country of Origin | USA | | Current Rating | 10 Amps | | Included Components | Module | | Manufacturer | eletechsup | | Maximum Switching Current | 10 Amps | | Mounting Type | DIN Rail Mount | | Operation Mode | Automatic | | Part Number | R4D3C32_24V | | Specification Met | Din | | UPC | 733805255008 | ## Product Details - **Brand:** eletechsup - **Coil Voltage:** 12 Volts - **Current Rating:** 10 Amps - **Mounting Type:** DIN Rail Mount - **Operation Mode:** Automatic ## Images ![DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) - Image 1](https://m.media-amazon.com/images/I/611ERzs5dnL.jpg) ![DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) - Image 2](https://m.media-amazon.com/images/I/611qQ-LZ7eL.jpg) ![DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) - Image 3](https://m.media-amazon.com/images/I/61qB0-xRSAL.jpg) ![DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) - Image 4](https://m.media-amazon.com/images/I/71FtOBQSAXL.jpg) ![DC 24V 32ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board (1) - Image 5](https://m.media-amazon.com/images/I/61nlBoxlIqL.jpg) --- ## 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.ec/products/809253341-dc-24v-32ch-modbus-rtu-rs485-relay-switch-board-uart](https://www.desertcart.ec/products/809253341-dc-24v-32ch-modbus-rtu-rs485-relay-switch-board-uart) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-07-27*