Best Voltage Isolation Boards

Looking for the best voltage isolation boards to enhance your electronics projects? Discover our top 10 picks designed to protect your devices, ensure safe circuit operation, and elevate your projects with ease.

Voltage isolation boards are essential tools for electronics projects. They protect your devices by separating control signals from high voltages. These boards are perfect for precise voltage management and safe circuit operation.

With easy-to-use designs and strong anti-interference features, these boards are ideal for beginners and experts alike. Discover the best voltage isolation boards to elevate your projects and ensure reliable performance.

List of Top 10 Voltage Isolation Boards

Title	Best For	Price
AOICRIE 4pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module	This AOICRIE 4pcs PC817 Optocoupler Isolation Board is perfect for hobbyists, makers, and engineers who need to control different voltages at the same time. It’s great for projects using microcontrollers or devices that need voltage isolation.	View on Amazon (paid link)
DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module	This DONGKER Optocoupler Isolation Board is perfect for anyone needing to safely control and convert signals in projects with DC 3.3V to 5V inputs. It’s ideal for 8-channel setups and works with NPN/PNP signals and loads up to 24V.	View on Amazon (paid link)
AOICRIE 2pcs PC817 8 Channel Optocoupler Isolation Board Voltage Converter Module 3.6-30V Photoelectric Isolated Module 817 Voltage Isolation Module	This product is perfect for anyone who needs to control different voltages at the same time. It’s great for projects that require voltage conversion or high-voltage driving, like working with relays, triodes, or MOS tubes.	View on Amazon (paid link)
3.3V/5V to 3.6V/24V 4 Channel Voltage Converter Optocoupler Isolated Board Adapter Module Strong Anti-Interference for Isolation Control and Voltage Conversion	This product is perfect for anyone needing to control higher voltage devices with a 3.3V or 5V signal. It’s ideal for projects requiring isolation and voltage conversion, like driving relays or transistors.	View on Amazon (paid link)
Alinan 4pcs 4CH Optocoupler PC817 4 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module	This product is perfect for anyone who needs to control high-voltage devices with low-voltage signals. It’s ideal for hobbyists, engineers, or DIY enthusiasts working on projects that require voltage isolation or reliable signal control.	View on Amazon (paid link)
DONGKER Optocoupler Isolation Board, 24V to 3.3V 8-Channel Photoelectric Isolation Module Level Voltage Converter PNP Output PLC Signal	This DONGKER Optocoupler Isolation Board is perfect for anyone working with MCUs, PLCs, or signal conversion. It’s ideal for transforming PNP/NPN signals and isolating voltage levels in projects or systems.	View on Amazon (paid link)
HiLetgo 2pcs PC817 4 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)	This HiLetgo 2pcs PC817 Optocoupler Isolation Board is perfect for hobbyists, makers, and engineers who need to isolate and control different voltages in their projects. It’s ideal for anyone working with electronics that require reliable voltage isolation and independent channel control.	View on Amazon (paid link)
HiLetgo 2pcs PC817 2 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)	This product is perfect for anyone who needs to control different voltages at the same time. It’s great for projects that require voltage isolation or photoelectric separation.	View on Amazon (paid link)
ACEIRMC 4pcs 1CH Optocoupler PC817 1 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module (10pcs 1CH Optocoupler)	This product is perfect for anyone needing to isolate and control different voltages in their projects. It’s ideal for hobbyists, students, or professionals working with electronics, robotics, or automation systems.	View on Amazon (paid link)
NOYITO PC817 8-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module	The NOYITO PC817 is perfect for anyone needing to isolate control signals and convert voltage in projects like robotics, home automation, or industrial control systems. It’s ideal for driving high-power components or low-power relays with strong anti-interference protection.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Voltage Isolation Boards handpicked for reliability and performance. Each board is expert-reviewed to ensure it meets your needs, whether for high-power projects or precise voltage control. Find the perfect match for your electronics tasks with this easy-to-follow guide.

1. AOICRIE 4pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module

AOICRIE 4pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module

The AOICRIE 4pcs PC817 is a 4-channel optocoupler isolation board. It lets you control different voltages at the same time. This makes it perfect for projects needing precise voltage management.

It works with input voltages from 3.6V to 24V and outputs up to 30V. The output current adjusts based on your setup. Use it to isolate control signals and protect your devices.

The jumper cap lets you choose high or low output. Avoid using it for signals over 3KHZ, as it won’t work properly. This module is easy to use for voltage isolation tasks.

Pros	Cons
Independent channels let you control different voltages at the same time. Wide voltage range handles 3.6V to 30V for flexible use. Signal isolation ensures safe, reliable control with microcontrollers. Jumper cap lets you choose high or low output easily.	Limited output current (max 10mA) restricts high-power applications. Not suitable for pulse signals above 3kHz. Requires careful voltage and current balancing for optimal use.

Perfect For:

This AOICRIE 4pcs PC817 Optocoupler Isolation Board is perfect for hobbyists, makers, and engineers who need to control different voltages at the same time. It’s great for projects using microcontrollers or devices that need voltage isolation.

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2. DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module

The DONGKER Optocoupler Isolation Board is a reliable signal converter. It isolates and controls signals with ease. Perfect for 8-channel input and output needs.

It works with DC 3.3V to 5V input and handles 1.8V to 24V loads. Supports NPN/PNP signals for low/high-level output.

Pros	Cons
8-Channel control for multiple signals in one module. Optocoupler isolation ensures safe, reliable signal transfer. Supports DC 3.3V~5V input for flexible compatibility. NPN/PNP output options for versatile applications.	Limited to specific voltage ranges, may not fit all projects. No built-in protection for overcurrent or short circuits. Requires technical knowledge for proper setup and use.

Perfect For:

This DONGKER Optocoupler Isolation Board is perfect for anyone needing to safely control and convert signals in projects with DC 3.3V to 5V inputs. It’s ideal for 8-channel setups and works with NPN/PNP signals and loads up to 24V.

Ready to Purchase?

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3. AOICRIE 2pcs PC817 8 Channel Optocoupler Isolation Board Voltage Converter Module 3.6-30V Photoelectric Isolated Module 817 Voltage Isolation Module

AOICRIE 2pcs PC817 8 Channel Optocoupler Isolation Board Voltage Converter Module 3.6-30V Photoelectric Isolated Module 817 Voltage Isolation Module

The AOICRIE 2pcs PC817 is a voltage converter module with 8 channels. It lets you control different voltages at the same time. This optocoupler isolation board works with 3.6-30V and has strong anti-interference ability.

It can drive high-power components like triodes and MOS tubes. It also works with low-power 24V relays. Remember, it’s not for signals over 4KHZ.

Pros	Cons
8 independent channels control different voltages simultaneously. Converts voltage levels from 3.3V/5V to 3.6-30V. Strong anti-interference with photoelectric isolation. Drives high-power components like MOS tubes and relays.	Limited to 4KHZ or less for pulse signals. Output current capped at 10MA, restricts high-power use. Not suitable for signals above 4KHZ, may fail.

Perfect For:

This product is perfect for anyone who needs to control different voltages at the same time. It’s great for projects that require voltage conversion or high-voltage driving, like working with relays, triodes, or MOS tubes.

Ready to Purchase?

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4. 3.3V/5V to 3.6V/24V 4 Channel Voltage Converter Optocoupler Isolated Board Adapter Module Strong Anti-Interference for Isolation Control and Voltage Conversion

3.3V/5V to 3.6V/24V 4 Channel Voltage Converter Optocoupler Isolated Board Adapter Module Strong Anti-Interference for Isolation Control and Voltage Conversion

This voltage converter is a handy tool for isolation control and voltage conversion. It easily converts 3.3V or 5V to control devices requiring 3.6V to 24V.

The module has a simple design, allowing you to choose between high or low output with a jumper. It’s easy to use and perfect for projects needing isolated control.

With strong anti-interference and photoelectric isolation, it can drive high-power components like transistors and MOSFETs. Remember, it’s not suitable for pulse frequencies above 4KHZ.

Pros	Cons
Easy voltage control from 3.3V/5V to 3.6V-24V. Switch output easily with a jumper for high or low potential. Strong anti-interference for reliable isolation control. Drive high-voltage devices like MOS tubes and 24V relays.	Limited to 4KHZ for pulse control. No high-frequency support. Not for high-speed applications.

Perfect For:

This product is perfect for anyone needing to control higher voltage devices with a 3.3V or 5V signal. It’s ideal for projects requiring isolation and voltage conversion, like driving relays or transistors.

Ready to Purchase?

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5. Alinan 4pcs 4CH Optocoupler PC817 4 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

The Alinan 4pcs 4CH Optocoupler PC817 is a 4-channel isolation board that acts as a voltage converter adapter module. It works with a wide voltage range, from 3.6V to 30V, making it versatile for various projects.

This module offers photoelectric isolation, ensuring strong anti-interference ability. It can drive high-power components like transistors and MOS tubes, or even low-power 24V relays. Easy to use, with jumper caps for output control.

Pros	Cons
Wide voltage range for both input and output ports. Strong anti-interference with photoelectric isolation technology. Versatile control for high and low voltage devices. Independent channels for simultaneous multi-voltage control.	Limited to 4KHZ pulse signals, not for higher frequencies. No built-in protection for overheating or short circuits. Requires careful setup for high-voltage applications.

Perfect For:

This product is perfect for anyone who needs to control high-voltage devices with low-voltage signals. It’s ideal for hobbyists, engineers, or DIY enthusiasts working on projects that require voltage isolation or reliable signal control.

Ready to Purchase?

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6. DONGKER Optocoupler Isolation Board, 24V to 3.3V 8-Channel Photoelectric Isolation Module Level Voltage Converter PNP Output PLC Signal

The DONGKER Optocoupler Isolation Board is a compact and efficient solution for your signal conversion needs. It measures just 859818mm, making it easy to integrate into your projects.

This board isolates signals and converts voltage levels from 24V to 3.3V. It handles PNP and NPN signals, transforming them into PNP output. With a 20KHz conversion frequency, it’s ideal for MCUs and PLCs.

Shop with confidence knowing you’re getting a high-quality product. The manufacturer offers satisfaction-guaranteed after-sales service. If you have any questions, their team is ready to help.

Pros	Cons
Compact design fits easily into your projects. Optocoupler isolation ensures reliable signal protection. Converts PNP/NPN signals to PNP for versatile use. High-frequency limit handles up to 20KHz signals. Satisfaction guaranteed with after-sales support.	Limited to 20KHz conversion frequency, may not suit all needs. No NPN output option, restricts signal transformation flexibility. Bulkier size (859818mm) might not fit compact setups.

Perfect For:

This DONGKER Optocoupler Isolation Board is perfect for anyone working with MCUs, PLCs, or signal conversion. It’s ideal for transforming PNP/NPN signals and isolating voltage levels in projects or systems.

Ready to Purchase?

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7. HiLetgo 2pcs PC817 4 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)

HiLetgo 2pcs PC817 4 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)

The HiLetgo PC817 Optocoupler Isolation Board is a reliable voltage isolation module. It comes in 2, 4, or 8 channels to fit your needs. Each pack includes two identical units.

Each channel works independently, letting you control different voltages at once. The jumper cap lets you choose high or low output easily.

This module works with 3.6V to 30V, making it versatile for projects. Its photoelectric isolation ensures safe and stable performance. Perfect for voltage conversion tasks.

Pros	Cons
Independent channels control different voltages at the same time. Jumper cap lets you choose high or low output easily. Pack of 2 gives you double the value for projects. Wide voltage range (3.6-30V) works with many devices.	Limited to specific voltage range (3.6-30V). No mixed types in the 2-piece pack. Requires technical knowledge for proper setup.

Perfect For:

This HiLetgo 2pcs PC817 Optocoupler Isolation Board is perfect for hobbyists, makers, and engineers who need to isolate and control different voltages in their projects. It’s ideal for anyone working with electronics that require reliable voltage isolation and independent channel control.

Ready to Purchase?

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8. HiLetgo 2pcs PC817 2 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)

HiLetgo 2pcs PC817 2 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)

The HiLetgo PC817 Optocoupler Isolation Board is a reliable voltage isolation module. It comes in 2, 4, or 8 channels, offering flexibility for your projects. This module ensures safe and efficient voltage control.

Each channel works independently, allowing you to manage different voltages at once. The jumper cap lets you choose high or low output easily. Simple and clear, it’s easy to use.

You get two identical units in one pack, not mixed types. Perfect for voltage conversion and photoelectric isolation, it works with 3.6-30V. A practical tool for your electronics needs.

Pros	Cons
Independent channels let you control different voltages at once. Jumper cap lets you choose high or low output easily. Pack of 2 gives you double the value for projects. Wide voltage range (3.6-30V) works for many applications.	Limited to specific voltage range (3.6-30V). No mixed types in the 2-piece pack. Requires technical knowledge for proper setup.

Perfect For:

This product is perfect for anyone who needs to control different voltages at the same time. It’s great for projects that require voltage isolation or photoelectric separation.

Ready to Purchase?

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9. ACEIRMC 4pcs 1CH Optocoupler PC817 1 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module (10pcs 1CH Optocoupler)

ACEIRMC 4pcs 1CH Optocoupler PC817 1 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module (10pcs 1CH Optocoupler)

The ACEIRMC 4pcs 1CH Optocoupler PC817 is a voltage converter adapter module. It helps with isolation control and voltage conversion in your projects. This module is easy to use and works well for various applications.

It has strong anti-interference ability due to photoelectric isolation. You can use it to drive high-power components like triodes and MOS tubes. It can also directly drive low-power 24V relays, making it versatile for different needs.

Simple to customize output with a jumper cap. Independent control of different voltages. Works with 3.3V or 5V inputs.

Pros	Cons
Isolates and converts voltage for safe, reliable control. Strong anti-interference for stable performance in any setup. Flexible output options: high or low potential with jumper caps. Controls 3.6-30V devices with 3.3V or 5V signals easily.	Limited to 4KHZ pulse signals, not for higher frequencies. No built-in protection for overheating or overcurrent. Requires careful setup to avoid malfunction.

Perfect For:

This product is perfect for anyone needing to isolate and control different voltages in their projects. It’s ideal for hobbyists, students, or professionals working with electronics, robotics, or automation systems.

Ready to Purchase?

View Price on Amazon (paid link)

10. NOYITO PC817 8-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

The NOYITO PC817 is a versatile 8-channel optocoupler isolation board designed for isolation control and voltage conversion. It ensures reliable signal transmission while protecting your circuits from interference.

With a drive terminal signal voltage of 3.6-24V and an output range of 3.6-30V, it’s perfect for high-voltage applications. It can control interfaces from 3.3V or 5V to 3.6-30V, making it ideal for driving relays and high-power components.

Photoelectric isolation boosts anti-interference ability. Maximum output current is 10mA. Avoid pulse signals above 4KHZ for best results.

Pros	Cons
Isolates control and converts voltage for safe, reliable operation. Drives high-power components with strong anti-interference ability. Controls 3.6-30V devices using low 3.3V or 5V signals. Directly drives 24V relays for efficient low-power applications.	Limited to 4KHZ pulse signals, not suitable for higher frequencies. Max output current is 10mA, restricting high-power applications. Total power remains constant, limiting voltage and current flexibility.

Perfect For:

The NOYITO PC817 is perfect for anyone needing to isolate control signals and convert voltage in projects like robotics, home automation, or industrial control systems. It’s ideal for driving high-power components or low-power relays with strong anti-interference protection.

Ready to Purchase?

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Buying Guide

Choosing the right voltage isolation board can elevate your projects and ensure reliable performance. Whether you’re a beginner or an expert, finding the best fit is key. Here’s what to consider:

Number of Channels:
Decide how many independent signals you need to isolate. Boards come in 1, 4, or 8 channels, so pick one that matches your project size.
Voltage Range:
Check the input and output voltage compatibility. Most boards work with 3.6V to 30V, but ensure it fits your specific needs.
Anti-Interference Ability:
Look for boards with strong anti-interference features like photoelectric isolation. This ensures stable performance in noisy environments.
Output Control:
Some boards let you choose high or low output with a jumper cap. This flexibility is great for customizing your setup.
Frequency Limitations:
Avoid boards for high-frequency signals (over 4KHZ). Most are designed for lower frequencies, so check the specs.
Ease of Use:
Opt for boards with simple designs and clear instructions. This makes them beginner-friendly and saves time.
Compatibility:
Ensure the board works with your components, like relays, transistors, or MOSFETs. Compatibility is key for seamless integration.
Size and Design:
Compact boards like the DONGKER Optocoupler (859818mm) are easy to fit into tight spaces. Consider the size for your project.
After-Sales Support:
Choose brands offering satisfaction-guaranteed service. Good support ensures you’re covered if issues arise.

With these factors in mind, you’ll find the best voltage isolation board to enhance your projects and ensure safety.