Arduino 4-Channel Relay Shield Module

Arduino 4-Channel Relay Shield Module – Product Overview

The Arduino 4-Channel Relay Shield Module gives your Arduino board reliable power switching for AC and DC devices. Designed to plug directly into standard Arduino headers, this shield provides four independent relays for controlling lights, fans, pumps, motors, and other appliances in automation and prototype systems.

Key Benefits

• Plug-and-play shield design for quick prototyping and project deployment
• Four separate channels to control multiple devices independently
• High quality relay contacts rated for common household and low voltage loads
• LED status indicators for immediate visual feedback
• Isolation protection to reduce the risk of damaging your Arduino during switching

Key Features

• 4 Independent Channels – Full control of four devices via digital pins
• Relay Trigger Voltage – 5V DC trigger for direct Arduino compatibility
• Load Capacity – Each relay handles 10A at 250V AC or 10A at 30V DC
• LED Indicators – Individual LEDs indicate relay activation
• Isolation Protection – Safe relay triggering to protect your microcontroller

Product Specifications

• Channels: 4
• Relay Voltage (trigger): 5V DC
• Load Support: 10A 250V AC / 10A 30V DC
• Interface: Digital I/O pins (D4 – D7 by default)
• Compatibility: Arduino Uno, Mega, Leonardo and compatible boards
• Size: Approx. 70mm x 50mm

Compatible Boards

• Arduino Uno
• Arduino Mega
• Arduino Leonardo
• Most Arduino-compatible boards with standard header layout

Common Applications

• Smart home automation – lights, fans, pumps and timed appliances
• Garden and irrigation systems
• Greenhouse ventilation and motor control
• Classroom experiments and industrial training kits
• Prototype and hobby electronics projects

Quick Start Guide

1. Power off your Arduino board and place the relay shield onto the Arduino headers.
2. Connect the devices you want to control to the relay common (COM) and normally open (NO) or normally closed (NC) terminals according to your wiring needs.
3. Power the Arduino and upload a simple sketch that toggles the digital pins D4 to D7 to test each relay.
4. Confirm correct operation using the built-in LED indicators before connecting mains-powered appliances.

Wiring and Safety Notes

• Always disconnect power before wiring or changing connections.
• When switching mains AC loads, ensure insulated wiring, proper fuses, and safe enclosures.
• Do not exceed the relay ratings: 10A at 250V AC or 10A at 30V DC.
• Use isolation techniques and follow local electrical regulations when working with high voltages.

Why Builders Choose This Shield

This relay shield combines a compact form factor with reliable switching performance. It is ideal for students, makers, and engineers who need dependable relay control with zero-fuss installation. The shield integrates seamlessly with Arduino sketches and libraries, making automation tasks fast to implement and test.

Colgroad Promise

At Colgroad, we support creators across Pakistan with reliable components. This Arduino relay board is tested for performance, packaged for safety, and priced for value. Whether you are starting your electronics journey or completing a final-year project, Colgroad offers trusted service and fast delivery.

Take Control Today

Bring your automation ideas to life. Get your Arduino 4-channel relay shield module now from Colgroad.com and enjoy fast delivery and reliable support.

Note: Images are for illustration purposes only.