--- product_id: 95577863 title: "4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation" brand: "oiyagai" price: "₨9766" currency: LKR in_stock: true reviews_count: 7 category: "Oiyagai" url: https://www.desertcart.lk/products/95577863-4pcs-12v-1-channel-relay-module-board-with-optocoupler-isolation store_origin: LK region: Sri Lanka --- # 4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation **Brand:** oiyagai **Price:** ₨9766 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** 4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation by oiyagai - **How much does it cost?** ₨9766 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/95577863-4pcs-12v-1-channel-relay-module-board-with-optocoupler-isolation) ## Best For - oiyagai enthusiasts ## Why This Product - Trusted oiyagai brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Product description Module Description 1. The module uses genuine quality relay, normally open interfaces Maximum load: AC 250V/10A, DC 30V/10A; 2. Using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA; 3. The module Operating voltage 5V/12V/24V; 4. The module can be high or low by a jumper setting trigger; 5. Fault-tolerant design, even if the control line is broken, the relay will not operate; 6. The power indicator (green), the relay status indicator (red) 7. The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient 8. Module size: 50mm*26mm*18.5mm (L*W*H) Oiyagai 4pcs 5V/12V/24V One 1 Channel Relay Module Board Shield with optocoupler Support High and Low Level Trigger Module interface 1. DC+: Positive power supply (VCC) 2. DC-: Negative power supply (GND) 3. IN: Can be high or low level control relay Relay outputs 1. NO: Normally open relay interface 2. COM: Common Interface Relays 3. NC: Normally closed relay interface High and low level trigger options It is low level trigger when jumper connect to LOW pin It is high level trigger when jumper connect to HIGH pin Package Include: 4 x relay module Review: Relays in 12vdc projects. - Used the 12vdc relays for my 12vdc charging project. One for the charging and other to cutoff the load during charging. In a different 12vdc project used a lm358 circuit to triggering the relay in a over voltage cutoff which would cutoff it main 12vdc supply so it could not restart. Review: Works great - Got them right on time, it does the job perfectly well. ## Features - Optocoupler Isolation Design – Provides complete optical isolation between input and output for enhanced stability and anti-interference performance. - High Power Switching – Supports maximum load up to AC 250V/10A or DC 30V/10A, ideal for controlling motors, lights, and automation systems. - High & Low Level Trigger Options – Easily configured via jumper setting to suit different MCU logic levels and trigger modes. - Microcontroller Compatible – Works perfectly with Arduino, Raspberry Pi, STM32, ESP32, and other development boards. - Compact and Easy to Use – Soldered and tested PCB with indicator LEDs; dimensions: 50 × 26 × 18.5mm (L×W×H); package includes 4 relay modules. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077TQQBLY | | Best Sellers Rank | #220,403 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #585 in Electrical Relays | | Brand | Oiyagai | | Brand Name | Oiyagai | | Coil Voltage | 12 Volts | | Connector Type | Through Hole | | Contact Current Rating | 10 Amps | | Contact Material | Tungsten | | Contact Type | Normally Closed | | Current Rating | 10 Amps | | Customer Reviews | 3.7 out of 5 stars 34 Reviews | | Manufacturer | Oiyagai | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 250 Volts | | Minimum Switching Voltage | 12 Volts | | Model | 7.6547E+11 | | Mounting Type | PCB Mount | | Operation Mode | Manual | | Part Number | 7.6547E+11 | | UPC | 765470382970 | | Wattage | 120 Milliwatts | ## Images ![4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation - Image 1](https://m.media-amazon.com/images/I/710Lj7JtsQL.jpg) ![4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation - Image 2](https://m.media-amazon.com/images/I/618s1SInN7L.jpg) ![4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation - Image 3](https://m.media-amazon.com/images/I/61tstBypQuL.jpg) ![4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation - Image 4](https://m.media-amazon.com/images/I/6128zGGGRSL.jpg) ![4pcs 12V 1 Channel Relay Module Board with Optocoupler Isolation, High and Low Level Trigger, 10A Relay Control for Arduino, MCU, and DIY Automation - Image 5](https://m.media-amazon.com/images/I/61sx8waynaL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Relays in 12vdc projects. *by A***C on July 15, 2019* Used the 12vdc relays for my 12vdc charging project. One for the charging and other to cutoff the load during charging. In a different 12vdc project used a lm358 circuit to triggering the relay in a over voltage cutoff which would cutoff it main 12vdc supply so it could not restart. ### ⭐⭐⭐⭐⭐ Works great *by R***N on April 16, 2020* Got them right on time, it does the job perfectly well. ### ⭐ Impossible to use NC contacts. *by Y***I on May 19, 2026* I purchased these relays and tested the NC contact pair. Almost all of the relays turned out to be very sensitive to mechanical vibration. I honestly cannot imagine what kind of current rating can be claimed for switching in these conditions. I am not satisfied with this product. --- ## 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.lk/products/95577863-4pcs-12v-1-channel-relay-module-board-with-optocoupler-isolation](https://www.desertcart.lk/products/95577863-4pcs-12v-1-channel-relay-module-board-with-optocoupler-isolation) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-05-27*