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Product Description:

Empower your automation projects with the versatile 5V 4-Channel Relay Module Board, featuring robust 10A relays designed for controlling higher power loads with low-voltage logic. This essential component bridges the gap between your microcontrollers like Arduino, Raspberry Pi, or ESP32, and high-voltage AC or DC devices, making it perfect for home automation, industrial control, and custom robotics. Each of the four independent relays provides both Normally Open (N/O) and Normally Closed (N/C) contacts, offering flexible wiring configurations for a wide range of applications. The module operates on a standard 5V DC supply and is typically driven by digital HIGH/LOW signals from your microcontroller's GPIO pins. For enhanced safety and noise immunity, many versions come equipped with optocoupler isolation, protecting your sensitive control circuitry from voltage spikes or ground loops originating from the switched loads. With a maximum switching current of 10 Amperes at 250V AC or 30V DC, this relay board can reliably control lights, motors, pumps, and other appliances. Simple to integrate with our clear relay module wiring diagram and readily available sample code, this 4 channel relay module for microcontroller offers a cost-effective and reliable solution for all your switching needs.

This 5V 4-Channel Relay Module is designed to interface with standard microcontrollers like Arduino, NodeMCU, ESP32, and Raspberry Pi, enabling them to control AC or DC loads up to 10A per channel.

Each relay includes an optocoupler isolation circuit for improved safety and noise immunity. The active-low trigger inputs allow you to control the relays with digital I/O pins from your board. A dedicated power LED and channel LEDs provide clear status indication.

Great for smart home automation, IoT switching, industrial control, and robotics.

Features:

• Control 4 AC/DC devices independently

• Optocoupler isolation for safety and noise immunity

• Works with Arduino, ESP8266, ESP32, Raspberry Pi

• Active-low inputs (low signal turns relay ON)

• High current capacity – up to 10A per relay

• Ideal for home automation and industrial use

• Pre-soldered header pins and terminals for easy wiring

Technical Specifications:

Applications:

• Home automation (light, fan, appliance control)

• IoT smart switch projects

• Industrial automation control

• Robotics and motor control

• Remote device switching

• Timed power circuits with microcontroller logic

Package Includes:

• 1 × 5V 4-Channel Relay Module Board (10A Relays)