---
product_id: 284109148
title: "KEYESTUDIO Relays for Arduino KS0251"
brand: "keyestudio"
price: "C$2753"
currency: NIO
in_stock: true
reviews_count: 5
url: https://www.desertcart.ni/products/284109148-keyestudio-relays-for-arduino-ks0251
store_origin: NI
region: Nicaragua
---

# 5V coil voltage for efficient switching Onboard LED indicators for real-time status 3A max current rating for robust control KEYESTUDIO Relays for Arduino KS0251

**Brand:** keyestudio
**Price:** C$2753
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and style!

## Quick Answers

- **What is this?** KEYESTUDIO Relays for Arduino KS0251 by keyestudio
- **How much does it cost?** C$2753 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/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

- • **Instant Visual Feedback:** Built-in LEDs keep you informed of relay status, eliminating guesswork
- • **Safe & Eco-Friendly Build:** Crafted with environmentally responsible materials and tested for reliability
- • **High-Performance Switching:** Handles up to 120V AC / 24V DC at 3A for versatile project power needs
- • **Vibrant & Intuitive Design:** Striking yellow-black PCB with clear silk-screen labels for easy wiring and debugging
- • **Seamless UNO R3 Integration:** Stack directly on your Keyestudio UNO R3 for plug-and-play simplicity

## Overview

The KEYESTUDIO 4-channel 5V relay module is a high-quality, environmentally friendly shield designed for seamless stacking on the Keyestudio UNO R3 board. It supports high-level triggering to control up to four relays simultaneously, each capable of switching up to 120V AC or 24V DC at 3A. Featuring a distinctive yellow-black design and onboard LED indicators, this relay module offers professional-grade performance and intuitive operation for advanced home automation and electronics 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

Review: Great product!
Review: Documented and easy to use

## 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 |
| Brand | KEYESTUDIO |
| Brand Name | KEYESTUDIO |
| Coil Voltage | 5 Volts |
| Connector Type | Through Hole |
| Connector type | Through Hole |
| Contact Current Rating | 3 Amps |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Contact material | Silver Tin Oxide |
| Contact type | Normally Open |
| Current Rating | 3 Amps |
| Current rating | 3 Amps |
| Customer Reviews | 4.5 out of 5 stars 69 Reviews |
| Item Weight | 0.09 Pounds |
| Manufacturer | keyes |
| Maximum Switching Current | 3 Amps |
| Maximum Switching Voltage | 120 Volts |
| Minimum Switching Voltage | 24 Volts (DC) |
| Mounting Type | Board Mount |
| Mounting type | Board Mount |
| Operation Mode | Automatic |
| UPC | 600346571792 |
| Wattage | 15 watts |

## Product Details

- **Connector type:** Through Hole
- **Contact material:** Silver Tin Oxide
- **Contact type:** Normally Open
- **Current rating:** 3 Amps
- **Mounting type:** PCB Mount

## Images

![KEYESTUDIO Relays for Arduino KS0251 - Image 1](https://m.media-amazon.com/images/I/61mls31xU6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product!
*by N***Y on 13 December 2025*



### ⭐⭐⭐⭐⭐ Documented and easy to use
*by K***S on 28 December 2020*



### ⭐⭐⭐⭐⭐ arduinoにつなぐだけでOK
*by T***A on 12 September 2018*

AC120V DC24Vと耐圧は少し低めではありますが、arduinoからの電源供給からで動作させることができる 非常に使い勝手のいいリレーモジュールです。動作確認用にLEDも内蔵されているので、動作状況も目視できます。 耐圧さえ範囲内であれば、非常におすすめです

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-09*