--- product_id: 111859038 title: "2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi" brand: "r reifeng" price: "£1.23" currency: GBP in_stock: false url: https://www.desertcart.co.uk/products/111859038-2-pack-dc-5v-8-channel-relay-module-with-optocoupler store_origin: GB region: Great Britain --- # 10A high current relay 8-channel optical isolation Universal MCU compatibility 2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi **Brand:** r reifeng **Price:** £1.23 **Availability:** ❌ Out of Stock ## Summary > 🔗 Connect Smarter, Control Faster — Power Your Projects Like a Pro! ## Quick Answers - **What is this?** 2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi by r reifeng - **How much does it cost?** £1.23 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/111859038-2-pack-dc-5v-8-channel-relay-module-with-optocoupler) ## Best For - r reifeng enthusiasts ## Why This Product - Trusted r reifeng brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Double-sided FR-4 PCB and industrial-grade relays for long-term stability. - • **Power Through Anything:** Handles up to 10A at AC250V/DC30V for robust device control. - • **Effortless Installation:** Standard screw holes and clear terminal labeling for quick setup. - • **Plug & Play Versatility:** Seamlessly integrates with Arduino, Raspberry Pi, STM32, and more. - • **Interference-Proof Reliability:** Optocoupler isolation ensures safe, noise-free operation in complex setups. ## Overview This 2-pack 8-channel 5V relay module features high-current relays rated for 10A at AC250V/DC30V, with optocoupler isolation for enhanced safety and interference resistance. Designed for broad MCU compatibility including Arduino UNO R3, MEGA 2560, PIC, AVR, ARM, and Raspberry Pi, it offers a durable double-sided FR-4 PCB and user-friendly installation with fixed screw holes and labeled terminals. Ideal for smart home automation, industrial control, and DIY electronics projects. ## Description Features: Using high-current relay , AC250V 10A DC30V 10A Contact some independent wiring , safe and reliable Standard interface , can be extended in a variety of development board With fixed screw holes for easy installation Suitable for a variety of platforms such as 51/AVR/AVR/ARM Module Description: 1 , the module complies with international safety standards , the load control area and regional isolation tank ; 2, using double-sided FR-4 circuit board design, high-end chip production process ; 3, using loose music authentic relay control ; 4, with the relay instructions , pull off, disconnect does not shine ; 5, the signal input has a low signal , often beginning with a common terminal will be turned on ; 6 , the relay can control the various devices and the load ; 7 , 8 and 8 normally open normally closed contact ; 8 , blue KF301 terminals to the control line is more convenient; 9 , Module size : 138m * 56mm * 18.5mm ( L * W * H ) , Weight : 120g 10 with 4 fixing bolt holes , hole 3.1mm, pitch 131mm * 49.5mm 11 , finished by 100% functional testing and stability testing. Two module interface : 1, VCC: 5V power supply connected to the positive 2, GND: 5V power supply connected to the negative 3, IN1-IN8: trigger signal , active low Relay outputs : a 12- line interface, the interface can be directly connected to all leads , user-friendly 1, NO1 - NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM 2, COM1 - COM8 Relay Common Interface 3, NC1 - NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant Package including 2* 8 channel relay module(the accessories is not included). ## Features - 5V 8-Channel Relay interface board - Using a large current relay, AC250V 10A DC30V 10A - The 8 channels are optically isolated, safe, reliable, anti-interference - Widely used for all MCU control, industrial sector, PLC control, smart home control,Suitable for various platforms such as 51/AVR/AVR/ARM - Suitable for various platforms such as 51/AVR/AVR/ARM ## Technical Specifications | Specification | Value | |---------------|-------| | Contact Type | Normally Closed | | Current Rating | 10 Amps | | Brand | R REIFENG | | Operation Mode | Automatic | | Coil Voltage | 5 Volts | | Maximum Switching Current | 10 Amps | | Manufacturer | R REIFENG | | Item Weight | 8.1 ounces | | Package Dimensions | 6.57 x 5.55 x 0.87 inches | | Is Discontinued By Manufacturer | No | | Manufacturer Part Number | ZD-003 | ## Product Details - **Contact Type:** Normally Closed - **Current Rating:** 10 Amps - **Brand:** R REIFENG - **Operation Mode:** Automatic - **Coil Voltage:** 5 Volts ## Images ![2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi - Image 1](https://m.media-amazon.com/images/I/61PYM6V2Q7L.jpg) ![2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi - Image 2](https://m.media-amazon.com/images/I/71MbCGC0exL.jpg) ![2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi - Image 3](https://m.media-amazon.com/images/I/61nxAQQMspL.jpg) ![2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi - Image 4](https://m.media-amazon.com/images/I/61T26lsXS5L.jpg) ![2-Pack DC 5V 8 Channel Relay Module with Optocoupler Expansion Board for UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi - Image 5](https://m.media-amazon.com/images/I/71EiTlr-+tL.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.co.uk/products/111859038-2-pack-dc-5v-8-channel-relay-module-with-optocoupler](https://www.desertcart.co.uk/products/111859038-2-pack-dc-5v-8-channel-relay-module-with-optocoupler) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-22*