--- product_id: 265639476 title: "SainSmart USB Eight Channel Relay Board for Automation - 12 V" brand: "sainsmart" price: "€ 56.84" currency: EUR in_stock: true url: https://www.desertcart.sk/products/265639476-sainsmart-usb-eight-channel-relay-board-for-automation-12-v store_origin: SK region: Slovakia --- # Supports up to 10A current per channel USB-controlled for seamless PC integration 8 SPDT relays for versatile switching SainSmart USB Eight Channel Relay Board for Automation - 12 V **Brand:** sainsmart **Price:** € 56.84 **Availability:** ✅ In Stock ## Summary > ⚡ Empower your automation game with 8 channels of seamless control! ## Quick Answers - **What is this?** SainSmart USB Eight Channel Relay Board for Automation - 12 V by sainsmart - **How much does it cost?** € 56.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/265639476-sainsmart-usb-eight-channel-relay-board-for-automation-12-v) ## Best For - sainsmart enthusiasts ## Why This Product - Trusted sainsmart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Automate:** USB interface ensures effortless connection and control via your PC—perfect for smart home or robotics projects. - • **High-Current Ready:** Doubled high current PCB tracks and copper contacts guarantee reliable switching under heavy loads. - • **Isolation & Safety:** Extra PCB openings enhance voltage isolation, minimizing interference and boosting durability. - • **8-Channel Powerhouse:** Control multiple devices simultaneously with 8 robust SPDT relays rated for 10A each. - • **Universal Software Support:** Compatible with multiple programming environments and comes with dedicated software for instant setup. ## Overview The SainSmart USB Eight Channel Relay Board is a 12V-powered, USB-controlled module featuring 8 SPDT relays rated for 10A each. Designed for home automation, robotics, and electrical switching projects, it offers enhanced voltage isolation, doubled high-current PCB tracks, and broad software compatibility for Windows environments. Ideal for professionals seeking reliable, scalable control solutions with easy PC integration. ## Features - 8 SPDT relays SRD-12VDC-SL-C - Supported by our software - Extra PCB openings for better voltage isolation - Doubled high current tracks ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0093Y89DE | | Brand | sainsmart | | Brand Name | sainsmart | | Coil Voltage | 12 Volts | | Connector Type | Solder | | Connector type | Solder | | Contact Current Rating | 10 Amps | | Contact Material | Copper | | Contact Type | spdt | | Contact material | Copper | | Contact type | spdt | | Current Rating | 10 Amps | | Current rating | 10 Amps | | Customer Reviews | 4.1 out of 5 stars 112 Reviews | | Manufacturer | SainSmart | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 12 Volts | | Minimum Switching Voltage | 11 Volts | | Model | 8541582310 | | Mounting Type | PCB Mount | | Mounting type | PCB Mount | | Operation Mode | Automatic | | Part Number | 11601 | | Unit Count | 8.0 Count | | Wattage | 120 watts | ## Product Details - **Connector type:** Solder - **Contact material:** Copper - **Contact type:** spdt - **Current rating:** 10 Amps - **Mounting type:** PCB Mount ## Images ![SainSmart USB Eight Channel Relay Board for Automation - 12 V - Image 1](https://m.media-amazon.com/images/I/6162rh6ZAGL.jpg) ![SainSmart USB Eight Channel Relay Board for Automation - 12 V - Image 2](https://m.media-amazon.com/images/I/51bTjbzGQBL.jpg) ![SainSmart USB Eight Channel Relay Board for Automation - 12 V - Image 3](https://m.media-amazon.com/images/I/517IdSxrE0L.jpg) ![SainSmart USB Eight Channel Relay Board for Automation - 12 V - Image 4](https://m.media-amazon.com/images/I/51kca8xlFbL.jpg) ![SainSmart USB Eight Channel Relay Board for Automation - 12 V - Image 5](https://m.media-amazon.com/images/I/41zSHDCt-bL.jpg) ## Questions & Answers **Q: The unit is functioning as expected. However, after it's use more, the unit cause computer to crash, when turning the on/Off a few time, the program hang up on the write command. The computer needed to reboot to recover. Any idea about this issue ? There are posts on the web that shows the similar issues. Do you have …** A: i know this question is old, but other people might be having the same problem. I had the same problem after so much iteration of write. what i did was clear the cache. the memory can only hold so much write before it hangs. I clear the cache before every write. it worked for me **Q: Do they provide a tool to control the board through command line?** A: You can download a sample tool from them which controls it via gui. I never saw a command line tool. It wasnt hard to integrate their commands into my own platform so a basic coder could probably make you a command line tool. **Q: Can this be used to give nc / no contacts?** A: I'm not sure of your question. This card has eight relays. Each relay has three screw clamp terminals where one is normally open, one is normally closed and the last is the common. So you can wire your device(s) to any or all relays in either normally open or closed position as you like. I hope this clarifies things. **Q: I want use as programmable sequential controller for my business led street sign, this unit need computer for program only or need computer to run.** A: You would need it connected to a computer. This unit does not have any sort of programmable timers or states. It is more or less a light switch you control via a computer button. ## Frequently Bought Together - SainSmart USB Eight Channel Relay Board for Automation - 12 V - MILAPEAK 8pcs (4 Sets) 8 Positions Dual Row 600V 25A Screw Terminal Strip Blocks with Cover + 400V 25A 8 Positions Pre-Insulated Terminals Barrier Strip (Black & Red) --- ## 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.sk/products/265639476-sainsmart-usb-eight-channel-relay-board-for-automation-12-v](https://www.desertcart.sk/products/265639476-sainsmart-usb-eight-channel-relay-board-for-automation-12-v) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-19*