--- product_id: 3243676 title: "USB Eight Channel Relay Board for Automation - 12 V" brand: "sainsmart" price: "S$57" currency: SGD in_stock: true category: "Sain Smart" url: https://www.desertcart.sg/products/3243676-usb-eight-channel-relay-board-for-automation-12-v store_origin: SG region: Singapore --- # Supports up to 10A high current switching 8 SPDT relays for versatile control Extra PCB openings for superior voltage isolation USB Eight Channel Relay Board for Automation - 12 V **Brand:** sainsmart **Price:** S$57 **Availability:** ✅ In Stock ## Summary > ⚙️ Automate like a pro — power, precision, and control in one sleek board! ## Quick Answers - **What is this?** USB Eight Channel Relay Board for Automation - 12 V by sainsmart - **How much does it cost?** S$57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/3243676-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 - • **8-Channel Powerhouse:** Control multiple devices seamlessly with 8 SPDT relays designed for professional automation setups. - • **Robust Build Quality:** Copper contacts and panel mount design deliver durability and stable long-term performance. - • **Plug & Play Automation:** USB connectivity backed by dedicated software for effortless integration and control. - • **High-Current Reliability:** Handles up to 10A switching current, perfect for demanding industrial and home automation projects. - • **Enhanced Voltage Isolation:** Extra PCB openings ensure safer, cleaner power management and reduce interference. ## Overview The SainSmart USB Eight Channel Relay Board is a 12V automation solution featuring 8 SPDT relays capable of switching up to 10A. Designed with extra PCB openings for improved voltage isolation and copper contacts for durability, it supports USB connectivity and is ideal for both industrial and home automation projects. ## Description desertcart.com: SainSmart USB Eight Channel Relay Board for Automation - 12 V : Industrial & Scientific ## 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 | | Best Sellers Rank | #140,451 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Solid State Relays | | Brand Name | SainSmart | | Coil Voltage | 12 volts | | Connector Type | Solder | | Contact Material | Copper | | Contact Type | Spdt | | Current Rating | 10 A | | Customer Reviews | 4.1 4.1 out of 5 stars (124) | | Manufacturer | SainSmart | | Maximum Switching Current | 10 A | | Maximum Switching Voltage | 12 volts | | Minimum Switching Voltage | 11 volts | | Model | 8541582310 | | Mounting Type | Panel Mount | | Operation Mode | Automatic | | Part Number | 11601 | | Unit Count | 8 Count | | Wattage | 120 watts | ## Product Details - **Connector Type:** Solder - **Contact Material:** Copper - **Contact Type:** Spdt - **Current Rating:** 10 A - **Mounting Type:** Panel Mount ## Images ![USB Eight Channel Relay Board for Automation - 12 V - Image 1](https://m.media-amazon.com/images/I/6162rh6ZAGL.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.sg/products/3243676-usb-eight-channel-relay-board-for-automation-12-v](https://www.desertcart.sg/products/3243676-usb-eight-channel-relay-board-for-automation-12-v) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-27*