--- product_id: 5750864 title: "SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32" brand: "sunfounder" price: "71 zł" currency: PLN in_stock: true reviews_count: 8 category: "Sun Founder" url: https://www.desertcart.pl/products/5750864-sunfounder-lab-4-relay-module-5v-4-channels-relay-module store_origin: PL region: Poland --- # 10A max current 4 independent relay channels Optocoupler isolation for safety SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32 **Brand:** sunfounder **Price:** 71 zł **Availability:** ✅ In Stock ## Summary > ⚡ Command your smart setup with 4x power-packed relays! ## Quick Answers - **What is this?** SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32 by sunfounder - **How much does it cost?** 71 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/5750864-sunfounder-lab-4-relay-module-5v-4-channels-relay-module) ## Best For - sunfounder enthusiasts ## Why This Product - Trusted sunfounder brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Robust copper-gold-silver alloy contacts ensure reliable, noise-free operation - • **Quad-Channel Control:** Four relays let you automate multiple devices simultaneously - • **Power Up Your Projects:** Handles up to 10A current for heavy-duty appliance control - • **Safe & Sound Switching:** Optocoupler isolation protects your microcontroller and gear - • **Plug & Play Integration:** Seamlessly compatible with Arduino R3, STM32, PIC, and AVR boards ## Overview The SunFounder Lab 4 Relay Module is a 5V, 4-channel relay board designed for seamless integration with popular microcontrollers like Arduino R3, STM32, PIC, and AVR. It supports switching currents up to 10A, features optocoupler isolation for enhanced safety, and uses durable copper-gold-silver alloy contacts for reliable performance. Ideal for DIY automation, electronics projects, and professional prototyping, this compact PCB-mount module offers robust, noise-free control of multiple high-current devices. ## Description desertcart.com: SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32 : Electronics Review: Reliable relay module, works as expected - I purchased this SunFounder 2-channel 5V relay module for a small electronics project, and it works exactly as advertised. The board is well built, clearly labeled, and easy to integrate with a microcontroller (Arduino/ESP-based setup). The optocoupler isolation is a nice safety feature and gives extra confidence when switching external loads. Both relays trigger cleanly at 5V, and I’ve had no issues with false switching or noise. Screw terminals are solid and make wiring straightforward. Overall, this is a reliable and beginner-friendly relay module that’s great for automation, DIY projects, or learning electronics. Good quality for the price — I would definitely buy it again. Review: Good relay board. - Bought this relay board to make a remote control for physically disconnecting a comm bus at a remote site to allow for troubleshooting. It works well being controlled with an arduino. ## Features - This is a 4-channel 5V relay interface board, which can control various appliances and other equipment with large current, each need driver current of 15-20mA - Note: This item is suitable for ages 14 and up - Product type: RELAY - Brand: SUNFOUNDER ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00E0NSORY | | Best Sellers Rank | #26,092 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #68 in Single Board Computers (Computers & Accessories) #276 in Industrial Electrical Controls & Indicators | | Brand | SunFounder | | Brand Name | SunFounder | | Coil Resistance | 15 Milliohms | | Coil Voltage | 5 Volts (DC) | | Connector Type | Dc Power Jack | | Contact Material | Copper Gold, Silver Alloy | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Customer Reviews | 4.6 out of 5 stars 1,281 Reviews | | Item Weight | 0.04 Kilograms | | Manufacturer | SunFounder | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 5 Volts | | Minimum Switching Voltage | 5 Volts | | Mounting Type | PCB Mount | | Operation Mode | Manual | | Part Number | 4C-5V | | Specification Met | 250v 10a (Ac Rating), 30v 10a (Dc Rating) | | UPC | 520141421286 | | Warranty Description | 1 Year Guarantee | | Wattage | 166 Milliwatts | ## Product Details - **Connector Type:** Dc Power Jack - **Contact Material:** Copper Gold, Silver Alloy - **Contact Type:** Normally Open - **Current Rating:** 10 Amps - **Mounting Type:** PCB Mount ## Images ![SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32 - Image 1](https://m.media-amazon.com/images/I/71wNc5LcAlL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Does this work with a particle photon?** A: I found that the series 3 denuralizer’s photon emitter is phased incorrectly being effected by the relay fly back current, thus under the wave particle duality presumption the photons are not behaving in a sinusoidal manner. Try using 7v for supply voltage. **Q: what does the jumper do?** A: You can remove the jumper to provide a different power supply (JD-VCC) to the relay actuation circuit from the one used by the host controller and to the LED side of the optocouplers. According to the relay spec, the nominal current draw is 71mA, and if for a 8 relay board that would be 568mA, and if you turn on all 8 relays simultaneously, you'll need 2-3 time more to achieve the latency. **Q: Just purchased one of these. Can I hook it directly to the Raspberry Pi or do I need to use a Mosfet or Opto Isolator?** A: Based on the picture, this 2 relay shield already has opto isolators for both relays (that is what the two 4 pin modules are). Raspberry Pi uses 3.3V and this uses 5V, so you may want to use a level shifter (or an NPN transistor with two resistors) to keep from overloading the Pi output. **Q: Is this a mechanical relay or an SSR? I am looking for something that will not make an audible sound when switching, and can provide very fast respons** A: It's a mechanical relay and makes a click, but it is not very loud. There are ssr "relays" available. Make sure to use a good heat sink if you need to switch any real current. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reliable relay module, works as expected *by M***E on January 13, 2026* I purchased this SunFounder 2-channel 5V relay module for a small electronics project, and it works exactly as advertised. The board is well built, clearly labeled, and easy to integrate with a microcontroller (Arduino/ESP-based setup). The optocoupler isolation is a nice safety feature and gives extra confidence when switching external loads. Both relays trigger cleanly at 5V, and I’ve had no issues with false switching or noise. Screw terminals are solid and make wiring straightforward. Overall, this is a reliable and beginner-friendly relay module that’s great for automation, DIY projects, or learning electronics. Good quality for the price — I would definitely buy it again. ### ⭐⭐⭐⭐⭐ Good relay board. *by F***O on February 25, 2026* Bought this relay board to make a remote control for physically disconnecting a comm bus at a remote site to allow for troubleshooting. It works well being controlled with an arduino. ### ⭐⭐⭐⭐⭐ Great relay *by B***B on December 26, 2025* The relay works very well with Arduino. Simple wiring and the relay is operating properly. ## Frequently Bought Together - SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32 - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects - HiLetgo GY-521 MPU-6050 MPU6050 3 Axis Accelerometer Gyroscope Module 6 DOF 6-axis Accelerometer Gyroscope Sensor Module 16 Bit AD Converter Data Output IIC I2C for Arduino --- ## 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.pl/products/5750864-sunfounder-lab-4-relay-module-5v-4-channels-relay-module](https://www.desertcart.pl/products/5750864-sunfounder-lab-4-relay-module-5v-4-channels-relay-module) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-30*