Best Four Relay Output Board

Looking for the best four relay output board? We’ve got you covered with a curated list of top picks to enhance your automation projects.
Discover versatile, reliable, and easy-to-use options perfect for Arduino, Raspberry Pi, and more, all designed to elevate your DIY or industrial tasks.

Relay modules are essential tools for controlling devices in automation projects. Whether you’re working on a smart home, industrial system, or DIY project, the right relay board can make all the difference. In this guide, we’ll explore the best four-channel relay output boards to help you find the perfect fit for your needs.

These boards are versatile, reliable, and easy to use. They work with Arduino, Raspberry Pi, and other microcontrollers. With high-current handling and safety features, they’re ideal for heavy-duty tasks.

From industrial control to home automation, these modules offer flexibility and performance. Let’s dive in and discover the top picks that will elevate your projects to the next level.

List of Top 10 Four Relay Output Board

Title	Best For	Price
ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32	This ELEGOO 4 Channel DC 5V Relay Module is perfect for anyone who wants to control devices with a microcontroller. It’s great for beginners and experts in smart home projects, industrial control, or DIY electronics.	View on Amazon (paid link)
ANMBEST 2PCS 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino	This product is perfect for makers and hobbyists who want to control high-power devices with their Raspberry Pi or Arduino. It’s easy to install and reliable, making it ideal for projects that need safe and stable switching.	View on Amazon (paid link)
AEDIKO 2pcs DC 12V Relay Module 4 Channel Relay Board Shield with Optocoupler Isolation Suport High/Low Level Trigger	This AEDIKO 2pcs DC 12V Relay Module is perfect for DIY makers, hobbyists, and engineers who need a reliable and easy-to-use 4-channel relay board. It’s great for controlling high-power devices like lights, motors, or appliances with microcontrollers like Arduino or Raspberry Pi.	View on Amazon (paid link)
Hosyond 4Pack 4 Channel DC 5V Relay Module with Optocoupler Relay Board for Arduino Raspberry Pi MEGA2560	This 4-channel relay module is perfect for anyone who wants to control high-current devices with their Arduino, Raspberry Pi, or other microcontrollers. It’s easy to use and great for smart home projects, industrial control, or any MCU-based system.	View on Amazon (paid link)
AEDIKO 4pcs DC 12V Relay Module 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level	This AEDIKO 4pcs DC 12V Relay Module is perfect for anyone who needs a reliable and safe way to control devices with ARM, PIC, AVR, MCU, Raspberry Pi, or CNC machines. It’s easy to use and works well for projects needing strong isolation and fault-tolerant design.	View on Amazon (paid link)
SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32	The SunFounder Lab 4 Relay Module is perfect for makers, students, and hobbyists aged 14 and up who want to control high-current devices with ease. It’s ideal for Arduino projects and works great with R3, Arm, PIC, AVR, and STM32 boards.	View on Amazon (paid link)
DIANN 30A 4 Channel Relay Module 12V Relay Module Expansion Board High Low Level Trigger with with Optocoupler Isolation for PLC Automation Equipment Control Industrial Control	The DIANN 30A 4 Channel Relay Module is perfect for anyone needing reliable control in industrial settings. It’s ideal for professionals and electronic enthusiasts working with PLC automation, industrial systems, or IoT projects.	View on Amazon (paid link)
JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM	The JBtek 4 Channel DC 5V Relay Module is perfect for makers, hobbyists, and professionals who want to control high-current devices with Arduino, Raspberry Pi, or other microcontrollers. It’s ideal for smart home projects, industrial automation, or PLC control.	View on Amazon (paid link)
GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)	This GUETNEU Relay Board is perfect for anyone needing a reliable, easy-to-install solution to control and protect their electrical systems. It’s ideal for PLCs, microprocessors, and time relays, offering clear labeling, LED indicators, and safety features for hassle-free use.	View on Amazon (paid link)
4-Channel 24V Relay Module Board with Optocoupler Isolation, Supports High/Low Level Triggers for Arduino Projects – Reliable Expansion Shield	This 4-Channel 24V Relay Module is perfect for DIY enthusiasts, hobbyists, and professionals working on Arduino projects or automation systems. It’s ideal for anyone needing reliable, safe, and flexible control in their setups.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Four Relay Output Boards, carefully selected based on expert reviews and customer feedback. Each product is evaluated for performance, features, and value, ensuring you find the perfect fit for your needs. Whether you prioritize reliability, versatility, or affordability, this guide has you covered. Dive in to find the best Four Relay Output Board to power your projects with confidence.

1. ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32

The ELEGOO 4 Channel DC 5V Relay Module is a powerful tool for controlling devices. It works with Arduino, AVR, PIC, ARM, and more. Its 5V active low design ensures reliable performance.

It has indicator lights for safe use. The standard interface connects easily to microcontrollers. It handles large currents for appliances and equipment.

This module is widely used in MCU control, industrial sectors, and smart homes. It’s a versatile solution for automation projects.

Pros	Cons
4-channel control for multiple devices with one module. Safe use with indicator lights for easy monitoring. Wide compatibility with Arduino, AVR, PIC, ARM, PLC. High power handling: AC250V 10A and DC30V 10A.	No built-in protection against reverse polarity or overcurrent. Requires external power supply for relay operation. Not suitable for high-voltage or heavy-duty industrial use.

Perfect For:

This ELEGOO 4 Channel DC 5V Relay Module is perfect for anyone who wants to control devices with a microcontroller. It’s great for beginners and experts in smart home projects, industrial control, or DIY electronics.

Ready to Purchase?

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2. ANMBEST 2PCS 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino

The ANMBEST 2PCS 4 Channel 5V Relay Module is a powerful tool for your projects. It works with Raspberry Pi and Arduino boards. Each relay can switch on/off by itself.

It has a high-current relay for heavy loads. The fault-tolerant design keeps it reliable. Even if the control line breaks, the relay stays still.

Installation is easy with screwed terminals and bolt holes. You can choose high/low level trigger with a jumper. It’s versatile and stable for all your needs.

Pros	Cons
4 Channels, 5V, 10A – Powerful and versatile for projects. Optocoupler Isolation – Reliable and stable triggering every time. Easy Install – Screwed terminals and bolt holes for quick setup. High/Low Trigger – Flexible control with jumper selection.	No built-in protection against voltage spikes or reverse polarity. Requires external power supply for operation, not plug-and-play. Limited to 5V systems, incompatible with higher voltage projects.

Perfect For:

This product is perfect for makers and hobbyists who want to control high-power devices with their Raspberry Pi or Arduino. It’s easy to install and reliable, making it ideal for projects that need safe and stable switching.

Ready to Purchase?

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3. AEDIKO 2pcs DC 12V Relay Module 4 Channel Relay Board Shield with Optocoupler Isolation Suport High/Low Level Trigger

The AEDIKO 2pcs DC 12V Relay Module is a 4-channel relay board with optocoupler isolation. It supports both high and low-level triggers, making it versatile for various projects.

This module is fault-tolerant, ensuring reliability even if the control line breaks. It comes with a screwed terminal plate and fixed bolt holes for easy installation. Connect it directly to microcontrollers for seamless control.

Pros	Cons
4 Channels, High/Low Level Trigger – Flexible control options. Optocoupler Isolation – Ensures reliable, stable operation. High-Current Relay – Handles AC 250V 10A or DC 30V 10A. Fault-Tolerant Design – Prevents relay movement if control line breaks. Easy Integration – Connects directly to microcontrollers with standard interface.	No built-in power supply requires external 12V source. Fixed voltage limits use in non-12V projects. Small size may be hard to handle for beginners.

Perfect For:

This AEDIKO 2pcs DC 12V Relay Module is perfect for DIY makers, hobbyists, and engineers who need a reliable and easy-to-use 4-channel relay board. It’s great for controlling high-power devices like lights, motors, or appliances with microcontrollers like Arduino or Raspberry Pi.

Ready to Purchase?

View Price on Amazon (paid link)

4. Hosyond 4Pack 4 Channel DC 5V Relay Module with Optocoupler Relay Board for Arduino Raspberry Pi MEGA2560

The Hosyond 4Pack 4 Channel DC 5V Relay Module is a powerful tool for your projects. It works with Arduino, Raspberry Pi, and more.

It has a standard interface for easy wiring. Comes with DuPont wires included. High or low level trigger options. Status indicator shows when it’s active.

Perfect for MCU control, industrial use, or smart homes. Handles high-current appliances with ease. A reliable choice for your electronics needs.

Pros	Cons
4-channel control for multiple devices, simplifying projects. Direct connection to microcontrollers, no extra wiring needed. High and low-level triggers for flexible control options. Wide application in smart homes, industrial, and MCU projects.	No built-in protection against voltage spikes or reverse polarity. Requires external power source for relay operation, not plug-and-play. Limited to 4 channels, may not suit larger projects.

Perfect For:

This 4-channel relay module is perfect for anyone who wants to control high-current devices with their Arduino, Raspberry Pi, or other microcontrollers. It’s easy to use and great for smart home projects, industrial control, or any MCU-based system.

Ready to Purchase?

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5. AEDIKO 4pcs DC 12V Relay Module 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level

The AEDIKO 4pcs DC 12V Relay Module is a 1-channel relay board with optocoupler isolation. It works with DC 12V and can handle high loads. This module is easy to use and reliable.

It has a fault-tolerant design, so it won’t operate if the control line breaks. The optocoupler isolation protects your I/O ports from damage. You can set the unit state with a jumper for high or low signal.

This module works well with ARM, PIC, AVR, MCU, Raspberry, and CNC machines. It’s a great choice for projects needing reliable relay control.

Pros	Cons
12V Relay Module handles high loads with ease. Fault-tolerant design ensures safe, reliable operation. Optocoupler isolation protects your I/O ports from damage. Jumper design allows easy high/low signal setup. Wide compatibility works with various devices and systems.	No built-in protection against reverse polarity or overvoltage. Limited to 12V, not compatible with other voltage systems. No indicator lights for relay status or power.

Perfect For:

This AEDIKO 4pcs DC 12V Relay Module is perfect for anyone who needs a reliable and safe way to control devices with ARM, PIC, AVR, MCU, Raspberry Pi, or CNC machines. It’s easy to use and works well for projects needing strong isolation and fault-tolerant design.

Ready to Purchase?

View Price on Amazon (paid link)

6. SunFounder Lab 4 Relay Module 5V 4 Channels Relay Module Compatible with Arduino R3 1280 Arm PIC AVR STM32

The SunFounder Lab 4 Relay Module is a 5V 4-channel board. It lets you control devices with large current. Each channel needs 15-20mA to work.

This module works with Arduino R3, 1280, Arm, PIC, AVR, and STM32. It’s easy to use and great for projects. Note: It’s for ages 14 and up.

The SunFounder brand makes this relay module. It’s a reliable tool for electronics and automation. Get it for your next project!

Pros	Cons
Control 4 devices with one module, easy and efficient. Safe for ages 14+, great for learning and projects. Compatible with Arduino and other boards, versatile use. Handles high currents, perfect for appliances and equipment.	Not for kids under 14, requires careful handling. Limited compatibility, works only with specific systems. High current needs extra caution during setup.

Perfect For:

The SunFounder Lab 4 Relay Module is perfect for makers, students, and hobbyists aged 14 and up who want to control high-current devices with ease. It’s ideal for Arduino projects and works great with R3, Arm, PIC, AVR, and STM32 boards.

Ready to Purchase?

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7. DIANN 30A 4 Channel Relay Module 12V Relay Module Expansion Board High Low Level Trigger with with Optocoupler Isolation for PLC Automation Equipment Control Industrial Control

DIANN 30A 4 Channel Relay Module 12V Relay Module Expansion Board High Low Level Trigger with with Optocoupler Isolation for PLC Automation Equipment Control Industrial Control

The DIANN 30A 4-Channel Relay Module is a powerful tool for industrial control. It handles high power loads up to 30A, making it ideal for PLC automation and industrial systems.

It features optocoupler isolation for safe operation and LED indicators to show channel status. The user-friendly design includes jumper settings for easy setup and terminal blocks for quick wiring.

Perfect for professionals and electronic enthusiasts. Works with PLC, IOT, and industrial control. Simple, reliable, and efficient.

Pros	Cons
Handles high power up to 30A for industrial control. Optocoupler isolation ensures safe, reliable operation. Easy setup with high/low-level trigger options. LED indicators show clear channel status. Versatile use for PLC, IoT, and experiments.	Limited to DC power supply only, no AC option. Bulkier design may not fit compact setups. No built-in overcurrent protection for high loads.

Perfect For:

The DIANN 30A 4 Channel Relay Module is perfect for anyone needing reliable control in industrial settings. It’s ideal for professionals and electronic enthusiasts working with PLC automation, industrial systems, or IoT projects.

Ready to Purchase?

View Price on Amazon (paid link)

8. JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM

The JBtek 4 Channel DC 5V Relay Module is a powerful tool for controlling devices. It works with Arduino, Raspberry Pi, and more. Perfect for projects needing high current.

It handles AC250V 10A and DC30V 10A with ease. Each channel uses 50-60mA to operate. LEDs show relay status clearly.

Use it for smart homes, PLCs, or industrial tasks. Control appliances and equipment simply. A reliable choice for any project.

Pros	Cons
High-current relays handle heavy loads with ease. 4-channel design for multiple device control. LED indicators show real-time status clearly. Versatile for smart homes, industry, and MCU projects.	High power consumption for each relay channel. No built-in protection against voltage spikes. Requires external power supply for operation.

Perfect For:

The JBtek 4 Channel DC 5V Relay Module is perfect for makers, hobbyists, and professionals who want to control high-current devices with Arduino, Raspberry Pi, or other microcontrollers. It’s ideal for smart home projects, industrial automation, or PLC control.

Ready to Purchase?

View Price on Amazon (paid link)

9. GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)

The GUETNEU Relay Board is a 4-channel relay module designed to amplify current for output loads. It’s easy to install with DIN rail mounting and fits narrow spaces when removed from its bracket.

This module works with 24V DC/AC, handles 10A loads, and includes LED indicators for clear operation. It also has over voltage protection and surge suppression for safety.

Pros	Cons
Amplifies current, protects control systems from damage. Easy DIN rail mount, fits narrow spaces effortlessly. LED indicators show relay status clearly. Overvoltage protection ensures safe operation.	Limited to 24V power source, may not suit all setups. No built-in cooling for high-load applications. Requires careful spec check to avoid wrong purchase.

Perfect For:

This GUETNEU Relay Board is perfect for anyone needing a reliable, easy-to-install solution to control and protect their electrical systems. It’s ideal for PLCs, microprocessors, and time relays, offering clear labeling, LED indicators, and safety features for hassle-free use.

Ready to Purchase?

View Price on Amazon (paid link)

10. 4-Channel 24V Relay Module Board with Optocoupler Isolation, Supports High/Low Level Triggers for Arduino Projects – Reliable Expansion Shield

4-Channel 24V Relay Module Board with Optocoupler Isolation, Supports High/Low Level Triggers for Arduino Projects - Reliable Expansion Shield

Boost your projects with the 4-Channel 24V Relay Module Board. It uses high-quality relays for stable, reliable performance. Perfect for hobbyists and pros alike.

Optocoupler isolation keeps your circuits safe from electrical noise. Dual indicator lights make setup and troubleshooting a breeze. High and low triggers offer flexible control.

This versatile module works with multiple voltages and outputs. It’s a great investment for growing projects.

Pros	Cons
High-quality relays ensure stable, reliable performance for all projects. Optocoupler isolation boosts safety and protects circuits from damage. Dual indicator lights simplify setup and troubleshooting effortlessly. Versatile trigger modes offer flexible control for any application.	No built-in protection against reverse polarity or overvoltage. Requires external power supply for operation, adding setup complexity. Limited to 4 channels, may not suit larger projects.

Perfect For:

This 4-Channel 24V Relay Module is perfect for DIY enthusiasts, hobbyists, and professionals working on Arduino projects or automation systems. It’s ideal for anyone needing reliable, safe, and flexible control in their setups.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Choosing the right four-channel relay output board can make your projects run smoothly. These boards help control devices with ease. Let’s explore how to pick the best one for you.

Factors to Consider When Buying a Four-Channel Relay Output Board:

Compatibility: Ensure the board works with your microcontroller, like Arduino or Raspberry Pi. Check for standard interfaces for easy connection.
Voltage and Current: Match the board’s voltage (e.g., 5V or 12V) and current handling to your project’s needs. High-current boards are great for heavy-duty tasks.
Trigger Type: Choose between high or low-level triggers based on your setup. Some boards offer jumper settings for flexibility.
Safety Features: Look for optocoupler isolation to protect your circuits. Fault-tolerant designs ensure reliability even if the control line breaks.
Installation Ease: Boards with screwed terminals, bolt holes, or DIN rail mounting make setup simpler.
Indicator Lights: LED indicators help monitor channel status and troubleshoot issues quickly.
Versatility: Pick a board that suits your project, whether it’s for smart homes, industrial control, or DIY projects.
Brand and Quality: Go for trusted brands known for reliability and performance.

With these factors in mind, you’ll find the perfect four-channel relay board to elevate your projects.