--- product_id: 284109148 title: "KEYESTUDIO Relays for Arduino KS0251" brand: "keyestudio" price: "FREE" currency: PAB in_stock: false category: "Keyestudio" url: https://www.desertcart.com.pa/products/284109148-keyestudio-relays-for-arduino-ks0251 store_origin: PA region: Panama --- # 5V coil voltage for efficient switching Onboard LED indicators for real-time status 4-channel relay control for versatile automation KEYESTUDIO Relays for Arduino KS0251 **Brand:** keyestudio **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ⚡ Power your projects with style and precision — don’t get left in the dark! ## Quick Answers - **What is this?** KEYESTUDIO Relays for Arduino KS0251 by keyestudio - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/284109148-keyestudio-relays-for-arduino-ks0251) ## Best For - keyestudio enthusiasts ## Why This Product - Trusted keyestudio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Switching Power:** Handles up to 3A at 120V AC or 24V DC — perfect for demanding projects. - • **Instant Visual Feedback:** Built-in LEDs keep you informed of relay status at a glance, no guesswork needed. - • **Safe & Eco-Friendly Build:** Crafted with environmentally responsible materials and tested for reliability. - • **Seamless UNO R3 Integration:** Stack directly on your Keyestudio UNO R3 for plug-and-play control. - • **Vibrant Yellow-Black Design:** Stand out with a sleek, easy-to-read board that’s as stylish as it is functional. ## Overview The KEYESTUDIO KS0251 is a 4-channel 5V relay module designed for seamless stacking on the Keyestudio UNO R3 board. It supports high-level triggering with a maximum switching capacity of 3A at 120V AC or 24V DC. Featuring a distinctive yellow-black design and onboard LED indicators, this eco-friendly relay shield offers reliable, easy-to-use automation control for professional-grade Arduino projects. ## Description WHY CHOOSE KEYESTUDIO! 1.EXCELLENT QUALITY solder is very clean, everything is aligned nicely, all boards are well packed after function,voltage, current testing 2.COOL YELLOW BLACK DESIGN The yellow trim is definitely a departure from the standard, dull, black boards, and the yellow silk screen on black mask really pops, making it easy to read the pin labels 3. REALLY SAFE This board made from environmentally friendly components and materials, as well as environmentally friendly production technology Specification 1.Working Style: high level is effective. 2.Contact Capacity: AC120V /3A DC24V/3A 3.Weight: 39.4g 4.Size:69*53*27mm 5.Fully compatible with UNO R3 board 6.Indicator LED onboard for Relay output status ## Features - It will integrate 4-channel 5V relay module, which is fully compatible with keyestudio UNO R3 control board - Work through stacking shield on the keyestudio UNO R3 control board, which is very easy and convenient - The 4-channel relay of shield is for high level effectively - And 4-channel relay control port should respectively connect with the digital port 4, 5, 6, 7 which is on the keyestudio UNO R3 control board - Only need to control the high and low level outputs of digital port 4, 5, 6, 7 on the 4-channel relay, which can achieve to control the relay switch ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07B2FTZD1 | | ASIN | B07B2FTZD1 | | Brand Name | KEYESTUDIO | | Coil Voltage | 5 Volts | | Connector Type | Through Hole | | Contact Current Rating | 3 Amps | | Contact Material | Silver Tin Oxide | | Contact Type | Normally Open | | Current Rating | 3 Amps | | Customer Reviews | 4.5 4.5 out of 5 stars (74) | | Customer reviews | 4.5 4.5 out of 5 stars (74) | | Date First Available | 8 April 2018 | | Is Discontinued By Manufacturer | No | | Item Weight | 41 g | | Item model number | KS0251 | | Manufacturer | keyes | | Manufacturer | keyes | | Maximum Switching Current | 3 Amps | | Maximum Switching Voltage | 120 Volts | | Minimum Switching Voltage | 24 Volts (DC) | | Model | KS0251 | | Mounting Type | Board Mount | | Operation Mode | Automatic | | Part Number | ks0251 | | Product Dimensions | 6.91 x 5.31 x 2.31 cm; 40.82 g | | UPC | 600346571792 | | Unit Count | 4.0 Count | | Wattage | 15 watts | ## Product Details - **Connector type:** Through Hole - **Contact material:** Silver Tin Oxide - **Contact type:** Normally Open - **Current rating:** 3 Amps - **Mounting type:** Board Mount ## Images ![KEYESTUDIO Relays for Arduino KS0251 - Image 1](https://m.media-amazon.com/images/I/61mls31xU6L.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.pa/products/284109148-keyestudio-relays-for-arduino-ks0251](https://www.desertcart.com.pa/products/284109148-keyestudio-relays-for-arduino-ks0251) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-21*