---
product_id: 201538566
title: "4 channel 5v relay shield module for Arduino UNO R3 Relay Shield Interface 4 Four Channel For PIC AVR DSP ARM MCU Arduino UNO R3"
brand: "youmile"
price: "€ 17.28"
currency: EUR
in_stock: true
reviews_count: 4
category: "Youmile"
url: https://www.desertcart.be/products/201538566-4-channel-5v-relay-shield-module-for-arduino-uno-r3
store_origin: BE
region: Belgium
---

# 4 high-power relay channels Onboard LED relay indicators Stackable shield design 4 channel 5v relay shield module for Arduino UNO R3 Relay Shield Interface 4 Four Channel For PIC AVR DSP ARM MCU Arduino UNO R3

**Brand:** youmile
**Price:** € 17.28
**Availability:** ✅ In Stock

## Summary

> ⚡ Command your smart projects with power and precision!

## Quick Answers

- **What is this?** 4 channel 5v relay shield module for Arduino UNO R3 Relay Shield Interface 4 Four Channel For PIC AVR DSP ARM MCU Arduino UNO R3 by youmile
- **How much does it cost?** € 17.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/201538566-4-channel-5v-relay-shield-module-for-arduino-uno-r3)

## Best For

- youmile enthusiasts

## Why This Product

- Trusted youmile brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Installation:** 3 M3 screw holes ensure stable, professional-grade mounting every time.
- • **Instant Visual Feedback:** Red onboard LEDs light up per relay activation, keeping you in control at a glance.
- • **Expandable Modular Design:** Stack multiple shields effortlessly to scale your smart home or industrial projects.
- • **Plug & Play Power Control:** Directly interfaces with Arduino UNO R3 for seamless high-current device management.
- • **Dual Voltage Compatibility:** Operates smoothly at 5V or 3.3V logic levels for versatile MCU integration.

## Overview

The 4 Channel 5V Relay Shield Module is a compact, stackable Arduino UNO R3-compatible board designed for high-current switching applications. Featuring four silver-contact relays with onboard LED indicators, it supports both 5V and 3.3V logic levels and includes screw terminals for secure device connections. Ideal for smart home automation and embedded control systems, this shield simplifies complex wiring with plug-and-play convenience and professional mounting options.

## Description

Description: 100% brand new and high quality Relay Shield (i.e. 5V Quad Relay Module) is a small current signal control power equipment commonly used electronic module, enabling high-power single-chip control devices are widely used in SCM system to make smart home project; and can be directly plugged into the compatible the use of various types of motherboards, eliminating the patch cable troubles. Features: 1. Standard for Shield interfaces and shape 2. Can continue to stack other for expansion boards 3. 3 M3 screw positioning holes for easy installation 4. High Drive (5V or 3.3V) normally open contact closure 5. Onboard relay indicator (red) Special Note: When using the For UNO board connected to it, because UNO USB interface is extremely high, should avoid green terminals are shorted its shell. Relay Shield Interface: (the last picture show) Relay: sky- 5V DC relay, model HJR-4102-L-5V, which Relay1 behalf of the 1st relay, the other and so on. Power Interface: 5V DC power interface Indicator: four lights are red when the relay is driven high, the corresponding indicator will light up. Relay Terminals: Terminal high-power, high-current high voltage can be connected to the device. The 1st foot ( i.e. NOx) is a normally open pin , NCx pin is normally closed , COMx is common, i.e., when the relay is not driven , NOx and COMx open between two pins , NCx and COMx connection ; When the relay (x) control signal pin is high drive relays , NOx and COMx connection open between NCx and COMx. Package included: 1 x 4 channel 5v relay shield module 2 x HJR 4102 L 5V relay

Review: Suitable but not perfect. - This is a good product and does what it should. It’s a cheaper build then an original Arduino board but that’s to be expected given the price. I had to trim some of the soldered pins to prevent a short against the USB port on the UNO R3 but otherwise all good. Digital pins 4, 5, 6&7 are used to activate the relays when HIGH.
Review: Funktioniert mit Einschränkungen - Das Shield funktioniert, auch sind 2 Ersatzrelais mit dabei. Aber wenn man es auf den ARDUINO UNO steckt, stören die Drahtenden bzw. Lötpunkte des Shields. Man kann es nicht ganz auf die Platine draufstecken und im Bereich der USB - Buchse muss das Metall isoliert werden damit es zu keinem Kurzschluss kommt. Das kennt man aber auch von anderen Shields. Kommt darauf noch ein weiteres Shield, dann sind die Verbindungen nicht 100% ok weil die Platine auf den Relais aufsetzt. Wenn die Verbindungsdrähte dieses obersten Shields etwas kurz sind, hat das obere Shield auch keinen 100% Kontakt.. Unter Umständen müssen dann dem obersten Board Verbindingsleisten mit längeren Beinchen aufgelistet werden. Fazit: Shield soweit ok, mit den geschilderten Verbindungaproblemen.

## Features

- Standard for Shield interfaces and shape
- Can continue to stack other for expansion boards
- 3 M3 screw positioning holes for easy installation
- High Drive (5V or 3.3V) normally open contact closure
- Onboard relay indicator (red)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZCRKGHV |
| Best Sellers Rank | 109,953 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 304 in Electromechanical Relays |
| Brand | Youmile |
| Coil Voltage | 5 Volts |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Contact material | Silver |
| Contact type | Normally Open |
| Country Of Origin | China |
| Customer Reviews | 3.9 out of 5 stars 26 Reviews |
| Manufacturer | Youmile |
| Manufacturer Part Number | GR-YM-165 |
| Minimum Switching Voltage | 5 Volts |
| Model Number | GR-YM-165 |
| Mounting Type | Boards |
| Mounting type | Boards |
| Operation Mode | Automatic |
| Operation mode | Automatic |
| UPC | 782855190906 |
| Unit Count | 4.0 count |

## Product Details

- **Connector type:** Screw
- **Contact material:** Silver
- **Contact type:** Normally Open
- **Mounting type:** Boards
- **Brand:** Youmile

## Images

![4 channel 5v relay shield module for Arduino UNO R3 Relay Shield Interface 4 Four Channel For PIC AVR DSP ARM MCU Arduino UNO R3 - Image 1](https://m.media-amazon.com/images/I/614ncBDvzBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Suitable but not perfect.
*by J***L on 2 May 2020*

This is a good product and does what it should. It’s a cheaper build then an original Arduino board but that’s to be expected given the price. I had to trim some of the soldered pins to prevent a short against the USB port on the UNO R3 but otherwise all good. Digital pins 4, 5, 6&7 are used to activate the relays when HIGH.

### ⭐⭐⭐ Funktioniert mit Einschränkungen
*by H***J on 30 September 2022*

Das Shield funktioniert, auch sind 2 Ersatzrelais mit dabei. Aber wenn man es auf den ARDUINO UNO steckt, stören die Drahtenden bzw. Lötpunkte des Shields. Man kann es nicht ganz auf die Platine draufstecken und im Bereich der USB - Buchse muss das Metall isoliert werden damit es zu keinem Kurzschluss kommt. Das kennt man aber auch von anderen Shields. Kommt darauf noch ein weiteres Shield, dann sind die Verbindungen nicht 100% ok weil die Platine auf den Relais aufsetzt. Wenn die Verbindungsdrähte dieses obersten Shields etwas kurz sind, hat das obere Shield auch keinen 100% Kontakt.. Unter Umständen müssen dann dem obersten Board Verbindingsleisten mit längeren Beinchen aufgelistet werden. Fazit: Shield soweit ok, mit den geschilderten Verbindungaproblemen.

### ⭐⭐⭐⭐ Problème de connectique
*by G***S on 8 January 2025*

Les pins de contacts de sortie du relay 1 touchent le corps de la prise USB alors que les broches sont loin d'être en place. Ça devrait passer en racourcissant les pins et avec un pas isolant. Les sortie A4 et A5 (SCL et SCA) deviennent inaccessibles. Dommage pour mon projet qui intègre des les adressables uniquement par ces 2 I/O. SOYEZ VIGILANTS.

---

## 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.be/products/201538566-4-channel-5v-relay-shield-module-for-arduino-uno-r3](https://www.desertcart.be/products/201538566-4-channel-5v-relay-shield-module-for-arduino-uno-r3)

---

*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-31*