5V 4 Channel Relay Module with Optocoupler for Arduino, ESP32 & Raspberry Pi

The 5V 4 Channel Relay Module with Optocoupler is designed for safely controlling multiple AC and DC electrical devices using Arduino, ESP32, Raspberry Pi and other microcontrollers. Featuring four independent relay channels, optocoupler isolation and LED status indicators, it is an excellent solution for automation, robotics, IoT and industrial control projects. Available from Chip.pk with fast delivery across Pakistan.

Description

The 5V 4 Channel Relay Module with Optocoupler is a reliable relay control board that enables low-voltage development boards and microcontrollers to safely switch high-voltage AC and DC loads. Equipped with four independent relay channels, the module allows users to control multiple electrical devices simultaneously while maintaining stable and isolated operation.

Each relay channel includes optocoupler isolation, helping protect the control circuit from electrical noise and voltage spikes generated by connected loads. The module is commonly used with Arduino, ESP32, Raspberry Pi, STM32, PIC, AVR and other embedded platforms, making it suitable for beginners, students, makers and professional engineers.

Its screw terminal outputs provide secure wiring for appliances such as lighting systems, motors, pumps, solenoid valves, fans and other electrical equipment. LED indicators allow quick monitoring of relay status during operation, while the compact PCB design makes installation simple in automation panels and embedded projects.

Whether you are developing a smart home controller, industrial automation system, robotics project or IoT application, the 5V 4 Channel Relay Module with Optocoupler delivers dependable switching performance and easy integration. Chip.pk supplies genuine electronic components for retail and wholesale customers across Pakistan.

Key Features

• 5V DC Operating Voltage
• 4 Independent Relay Channels
• Built-in Optocoupler Isolation
• LED Status Indicators
• High Current Relay Outputs
• Screw Terminal Connections
• Supports AC & DC Load Switching
• Easy GPIO Interface
• Reliable Switching Performance
• Compact PCB Design
• Suitable for Automation & IoT Projects
• Easy Installation

Verified Technical Specifications

Compatibility

Compatible with:

• Arduino Uno
• Arduino Nano
• Arduino Mega
• ESP32
• ESP8266
• Raspberry Pi
• Raspberry Pi Pico
• STM32 Development Boards
• PIC Microcontrollers
• AVR Boards
• PLC Controllers

Applications

• Home Automation
• Smart Lighting Systems
• Pump Control
• Motor Switching
• Fan Control
• Solenoid Valve Control
• Industrial Automation
• Robotics Projects
• IoT Systems
• Security Systems
• Smart Agriculture
• DIY Electronics

Package Includes

• 1 × 5V 4 Channel Relay Module with Optocoupler

Important Notes

• Operates using a regulated 5V DC power supply.
• Ensure connected loads remain within the relay contact ratings.
• Follow proper electrical safety procedures when switching AC mains voltage.
• Disconnect power before wiring or modifying connections.

Why Buy from Chip.pk?

• Genuine electronic components
• Quality-tested products
• Retail & wholesale quantities available
• Competitive pricing
• Fast delivery across Pakistan
• Secure packaging
• Technical support before purchase
• Trusted supplier for students, engineers, makers and industries

Frequently Asked Questions (FAQs)

Is this relay module compatible with Arduino?

Yes, it is fully compatible with Arduino Uno, Nano, Mega and other Arduino-compatible boards.

Can I use this module with ESP32?

Yes. It can be used with ESP32 for home automation, IoT and embedded control projects. Verify your GPIO logic requirements during system design.

What is the function of the optocoupler?

The optocoupler electrically isolates the control circuit from the relay switching circuit, reducing electrical interference and improving reliability.

What devices can this relay module control?

It can control lights, pumps, motors, fans, solenoid valves and other AC or DC electrical devices within the specified relay ratings.