---
product_id: 404474026
title: "4 Channel Relay Shield 5V for Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board"
brand: "keyestudio"
price: "฿4044"
currency: THB
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.th/products/404474026-4-channel-relay-shield-5v-for-arduino-controller-r3-arm
store_origin: TH
region: Thailand
---

# 5V active HIGH relay control Onboard LED status indicators 3A high current switching 4 Channel Relay Shield 5V for Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board

**Brand:** keyestudio
**Price:** ฿4044
**Availability:** ✅ In Stock

## Summary

> ⚡ Command your smart projects with power and style!

## Quick Answers

- **What is this?** 4 Channel Relay Shield 5V for Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board by keyestudio
- **How much does it cost?** ฿4044 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/404474026-4-channel-relay-shield-5v-for-arduino-controller-r3-arm)

## 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

- • **Visual Feedback:** Red LEDs light up on activation, so you always know your relay status at a glance.
- • **Plug & Play Power:** Seamlessly integrates with Arduino R3 & compatible boards for instant control.
- • **Eco-Conscious Build:** Crafted with environmentally friendly materials and production methods—tech that cares.
- • **High-Current Muscle:** Handles up to 3A at 120V AC or 24V DC—perfect for heavy-duty appliances.
- • **Sleek & Functional Design:** Striking yellow-black PCB with clear pin labels for effortless wiring and debugging.

## Overview

The KEYESTUDIO 4 Channel Relay Shield is a robust 5V active HIGH relay module designed for Arduino R3 and similar microcontrollers. It supports switching currents up to 3A at 120V AC or 24V DC, features onboard LED indicators for real-time relay status, and boasts a distinctive yellow-black design for easy pin identification. Environmentally friendly and easy to install, this shield empowers professionals to control multiple high-power devices effortlessly.

## 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 is made from environmental-friendly components and materials, as well as environmental-friendly production technology  Features: Channel: 4 channel  The relay shield is 5V active HIGH  Contact capacity: AC120V / 3A ; DC24V/3A  Onboard LED indicator for relay output status  Indicator: 4 LEDs are red when the relay is driven high, the corresponding indicator will light up.  Standard interface can be directly plugged into microcontrollers.  Fully compatible with controller R3 board  Power Interface: 5V DC power interface  Indicator LED onboard for Relay output status Relay 1 (I/O pin 4) is connected to a terminal J4; Relay 2 (I/O pin 5) is connected to J3; Relay 4 is connected to J1.  Be able to control various appliances and other equipment with large current.  3 M3 screw positioning holes for easy installation

## Features

- It integrates 4-channel 5V relay module, and is fully compatible with R3 control board.
- The 4-channel relay module shield is active at HIGH level.
- Relay Terminals: high-power, high-current high voltage can be connected to the device.
- Separately connect the 4-channel relay to digital port 4, 5, 6, 7 on the R3 control board, then through controlling output HIGH or LOW to control the relay on and off.
- How to use: search for "keyestudio wiki ks0251" in Google Chrome to get the wiki online tutorial for this product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Connector Type | Through Hole |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Current Rating | 3 Amps |
| Mounting Type | PCB Mount |
| Brand | Keyestudio |
| Operation Mode | Automatic |
| Wattage | 15 Watts |
| Coil Voltage | 5 Volts |
| Contact Current Rating | 3 Amps |
| Maximum Switching Current | 3 Amps |
| Maximum Switching Voltage | 120 Volts |
| Minimum Switching Voltage | 24 Volts (DC) |
| UPC | 600346571792 |
| Manufacturer | keyes |
| Model | KS0251 |
| Product Dimensions | 6.91 x 5.31 x 2.31 cm; 40.82 g |
| Item model number | KS0251 |
| Batteries Included | No |
| Batteries Required | No |
| Has Auto Focus | No |
| Programmable Buttons | No |
| Manufacturer | keyes |
| Country of Origin | USA |
| Item Weight | 40.8 g |

## Product Details

- **Connector Type:** Through Hole
- **Contact Material:** Silver Tin Oxide
- **Contact Type:** Normally Open
- **Current Rating:** 3 Amps
- **Mounting Type:** PCB Mount

## Images

![4 Channel Relay Shield 5V for Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board - Image 1](https://m.media-amazon.com/images/I/61mls31xU6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Header pins alignment
  

*by S***U on Reviewed in Canada on 23 September 2019*

Great arduino clone. No programming issues.The only reason i gave 4/5 is the fact the the header pins were not 100% aligned, thus making it hard to couple with the Uno board.

### ⭐⭐⭐⭐⭐ 







  
  
    Documented and easy to use
  

*by K***S on Reviewed in Canada on 28 December 2020*

It is not obvious how to connect this to a Raspberry Pi but it works well with an Arduino Uno and a sample program is available.

### ⭐⭐⭐⭐⭐ 







  
  
    Quality
  

*by C***R on Reviewed in Canada on 4 September 2019*

Perfect, good quality , like it .

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**Shop now:** [https://www.desertcart.co.th/products/404474026-4-channel-relay-shield-5v-for-arduino-controller-r3-arm](https://www.desertcart.co.th/products/404474026-4-channel-relay-shield-5v-for-arduino-controller-r3-arm)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-30*