--- product_id: 811298136 title: "3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch" brand: "vklsvan" price: "SAR 35" currency: SAR in_stock: true category: "Vklsvan" url: https://www.desertcart.com.sa/products/811298136-3pcs-dc-12v-1-channel-relay-module-board-with-isolated store_origin: SA region: Saudi Arabia --- # AC 250V/10A max load High/Low level trigger selectable Optocoupler isolation for stable drive 3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch **Brand:** vklsvan **Price:** SAR 35 **Availability:** ✅ In Stock ## Summary > 🔌 Elevate your control game with precision and power — don’t get left in the relay dust! ## Quick Answers - **What is this?** 3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch by vklsvan - **How much does it cost?** SAR 35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/811298136-3pcs-dc-12v-1-channel-relay-module-board-with-isolated) ## Best For - vklsvan enthusiasts ## Why This Product - Trusted vklsvan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fail-Safe Design:** Fault-tolerant circuitry means your relay stays off even if control lines break—reliability you can trust. - • **Rock-Solid Isolation:** SMD optocoupler ensures stable, noise-free relay activation for flawless performance. - • **Plug & Play Convenience:** Standard terminal blocks and fixed bolt holes make wiring and mounting a breeze for rapid deployment. - • **Dual Trigger Flexibility:** Switch seamlessly between high and low level triggers to fit any control logic setup. - • **Powerhouse Load Capacity:** Handles up to AC 250V/10A or DC 30V/10A with ease, powering your projects without compromise. ## Overview This 3-piece DC 12V 1-channel relay module set features genuine high-quality relays capable of switching AC loads up to 250V/10A and DC loads up to 30V/10A. Equipped with SMD optocoupler isolation, it delivers stable, noise-resistant performance with a low 5mA trigger current. The module supports both high and low level triggers via jumper settings and includes fault-tolerant design to prevent accidental activation if control lines fail. User-friendly terminal blocks and mounting holes ensure easy integration with a wide range of microcontrollers and projects. ## Description Module description: 1. The module uses genuine high-quality relays, and the maximum load of the normally open interface is: AC 250V/10A, DC 30V/10A; 2. It uses patch optocoupler isolation, with strong driving ability and stable performance; trigger current 5mA; 3. The module working voltage is 5V 4. The module can be set to high or low level trigger through jumpers; 5. Fault-tolerant design, even if the control line is broken, the relay will not work; 6. Power indicator light (green), relay status indicator light (red) 7. The interface design is user-friendly, and all interfaces can be directly connected through the terminal block, which is very convenient 8. Module size: 50mm * 26mm* 18.5mm (length * width * height) 9. There are 4 fixing bolt holes, the hole is 3.1mm, and the spacing is 44.5mm*20.5mm Module interface: 1. DC+: Connect to the positive pole of the power supply (the voltage is according to the relay requirements, and there are 5V.9V.12V and 24V options) 2. DC-: Connect to the negative pole of the power supply 3. IN: The relay can be controlled to be attracted at a high or low level Relay output terminal: 1. NO: Relay normally open interface, suspended before the relay is attracted, and short-circuited with COM after attraction 2. COM: Relay common interface 3. NC: Relay normally closed interface, short-circuited with COM before the relay is attracted, and suspended after attraction High and low level trigger selection terminal: 1. When the jumper is shorted with LOW, it is a low level trigger; 2. When the jumper is shorted with high, it is a high level trigger. Package contain: 3PCS DC 12V 1 Channel Relay Module Relay switch ## Features - 【Stable performance】With SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA. - 【Maximum load】The module normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A. - 【High/ Low trigger 】The module can be set to high level or low level trigger through jumper. - 【Fault-tolerant design】even if the control line is broken, the relay will not operate. - 【Convenient wiring】1 Channel Module Equipped With Screwed Terminal Plate and Fixed Bolt Holes,Standard Interface Can Connect With Microcontrollers and be Controlled by a Wide Range of Microcontrollers, all interfaces are available through the wiring terminal direct connection leads, very convenient. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DPW68SXT | | Best Sellers Rank | #181,150 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #68 in Solid State Relays | | Brand Name | VKLSVAN | | Customer Reviews | 4.6 4.6 out of 5 stars (3) | | Manufacturer | VKLSVAN | | Part Number | 389-1129 | ## Images ![3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch - Image 1](https://m.media-amazon.com/images/I/61wsvPa7+2L.jpg) ![3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch - Image 2](https://m.media-amazon.com/images/I/61c4hcCxb8L.jpg) ![3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch - Image 3](https://m.media-amazon.com/images/I/61sUvfaK-pL.jpg) ![3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch - Image 4](https://m.media-amazon.com/images/I/61BpH167vrL.jpg) ![3PCS DC 12V 1 Channel Relay Module Board with Isolated Optocoupler Supports High and Low Level Trigger Relay Expansion Board Relay Switch - Image 5](https://m.media-amazon.com/images/I/61CeqmKz1NL.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.com.sa/products/811298136-3pcs-dc-12v-1-channel-relay-module-board-with-isolated](https://www.desertcart.com.sa/products/811298136-3pcs-dc-12v-1-channel-relay-module-board-with-isolated) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-09-06*