4pcs DC 5V Relay Module
4.6Editor score
Optocoupler Isolation
High Low Trigger
Screw Terminals
Fault Tolerant
In this guide
Selecting the right switching component is crucial for any electronics project involving high power loads. A reliable 5V Relay Module allows you to control AC or DC devices safely using low voltage signals from microcontrollers like Arduino or Raspberry Pi.
We have evaluated ten highly rated modules based on isolation quality, load capacity, and interface flexibility. Each entry offers distinct advantages for hobbyists and professionals requiring stable relay control in embedded systems or automation setups.
Our detailed analysis highlights key features, pros, and cons to help you make an informed decision. Remember that availability and pricing may fluctuate, so verify current stock before purchasing your next component batch for your workspace.
Top 3 Picks for Best 5V Relay Module
SunFounder 2 Channel DC 5V Relay Module
4.6Editor score
Two Channel Output
Standard Interface
LED Indicators
Wide MCU Support
5V One Channel Relay Module
4.7Editor score
Dual Indicator Lights
Pack of Ten
Patch Optocoupler
Humanized Design
Top 10 Best 5V Relay Module in 2026 Compared
The following table provides a side-by-side overview of the ten selected modules, detailing their channel counts, isolation types, and trigger options to streamline your selection process.
ProductsSpecificationsEditor scorePrice
Best Budget
4pcs DC 5V Relay Module
1 Channel Single
Optocoupler Isolated
High Low Trigger
AC 250V Load
4.6Editor score
Editor's Choice
HiLetgo 2pcs 5V One Channel
1 Channel Single
SMD Optocoupler
Fault Tolerant
Direct Terminal Leads
4.6Editor score
Editor's Choice
SunFounder 2 Channel DC 5V
2 Channel Dual
Low Level Trigger
Status LED Light
Standard Pinout
4.6Editor score
5v Relay Module 5V Indicator Light
1 Channel Single
Indicator Light LED
TTL Control Signal
Normally Open NC
4.6Editor score
2PCS 5V 4 Channel Relay
4 Channel Quad
Opto Isolated
Jumper Selection
Fixed Bolt Holes
4.3Editor score
4pcs DC 5V Relay Module 2 Channel
2 Channel Dual
High Current Relay
Screwed Terminal
Microcontroller Compatible
4.4Editor score
HiLetgo 2pcs 5V 30A One Channel
1 Channel Single
30A Load Cap
12V 24V Support
Friendly Interface
4.6Editor score
ELEGOO 4 Channel DC 5V
4 Channel Quad
Active Low Input
JD VCC Option
Flexible Wiring
4.5Editor score
8 Channel Relay Module DC 5V
8 Channel Octal
High Low Level
15A 125VAC
Fixed Bolt Holes
4.5Editor score
5V One Channel Relay Module Relay Switch
1 Channel Single
Pack of Ten
Dual Indicator Lights
Insulation Design
4.7Editor score
1. 4pcs DC 5V Relay Module – Best Budget Solution
4pcs DC 5V Relay Module
Optocoupler Isolation
Max Load 10A
5mA Trigger Current
NC C NO Terminals
This module delivers solid performance for basic switching tasks with a rating of 4.6 stars. It features optocoupler isolation which protects your microcontroller from voltage spikes during relay switching.
Pros
- Strong driving ability
- Fault tolerant design
- Isolation prevents damage
- Jumper for trigger
Cons
- Single channel per board
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The fault-tolerant design ensures that if the control line breaks, the relay stays in a safe state. You can wire all interfaces directly through terminals for easy connection to your circuit.
While it is limited to one channel per unit, the jumper design allows you to choose between high or low level triggering. This flexibility makes it suitable for various logic levels.
Hobbyists building simple automation projects will appreciate the value and reliability offered here. It works well with ARM, PIC, AVR, and MCU boards for diverse applications.
Protection Against Electrical Noise
The optocoupler isolation creates a physical barrier between your control circuit and the high power load side.
Flexible Trigger Logic
A simple jumper setting lets you invert the logic so the relay activates on high or low signals.
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2. HiLetgo 2pcs 5V One Channel – Reliable Standard Module
HiLetgo 2pcs 5V One Channel
Genuine Quality Relay
SMD Optocoupler
Trigger Current 5mA
Direct Connection Terminal
The HiLetgo module is known for using genuine quality relays that ensure long term stability in your projects. It has received a solid rating of 4.6 stars from users.
Pros
- Stable performance
- Human nature interface
- Max load 10A
- Set by jumper
Cons
- Basic feature set
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Its interface design is straightforward with all leads available through direct connection terminals. This makes wiring very convenient for beginners and experienced engineers alike.
The module includes fault-tolerant design so it will not move even if the control line is broken. This adds a layer of safety for critical control systems.
If you need a simple reliable relay for AC or DC loads this is a strong candidate. The SMD optocoupler isolation provides strong driving capability for consistent operation.
Easy Terminal Connections
All interfaces are accessible via terminals which simplifies the wiring process significantly.
Safety First Design
Fault-tolerant features prevent unexpected relay movement during control signal interruptions.
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3. SunFounder 2 Channel DC 5V – Best for Dual Control
SunFounder 2 Channel DC 5V
2 Channel Interface Board
AC250V 10A Rated
Indicator LED Status
Standard Interface Design
This board offers two channels which doubles your control capacity without increasing footprint size. It is rated 4.6 stars for its reliability and standard interface design.
Pros
- Two independent channels
- LED for status
- Low level trigger
- Compatible with many MCUs
Cons
- Requires driver current
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Each channel needs 15-20mA driver current which is typical for this class of module. The high current relay handles AC250V 10A and DC30V 10A loads effectively.
You will appreciate the indication LEDs that show the output status of each relay. This visual feedback helps immensely when debugging your circuit connections.
It is compatible with a wide range of microcontrollers including Arduino and Raspberry Pi. If you need dual channel control this expansion board is an excellent choice.
Visual Status Feedback
LED indicators for each channel let you see the relay state instantly.
Versatile Microcontroller Support
The standard interface works with almost any common MCU platform you might use.
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4. 5v Relay Module 5V Indicator – Simple Switching
5v Relay Module 5V Indicator
TTL Control Signal
Normally Open Closed
Appliance Control Use
Digital Output Control
This module is designed for simple appliance control tasks using digital outputs. It has a rating of 4.6 stars and works well with most development boards.
Pros
- Used as modules
- 220V AC Load support
- Digital output compatible
- Control AC or DC
Cons
- Single channel limitation
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It allows you to control DC or AC signals including loads up to 220V AC. There is a normally open and normally closed contact available for wiring flexibility.
Just connect a digital output of your board to the module to control power demanding appliances. It is useful for controlling motors LED strips or other modules.
Ideal for quick prototyping projects where basic switching is required. The TTL control signal range of 5V to 12V ensures compatibility with many logic levels.
Flexible AC and DC Use
Supports both AC and DC signal control for versatile appliance management.
Digital Output Ready
Directly connects to digital pins on your microcontroller for simple logic control.
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5. 2PCS 5V 4 Channel Relay – Quad Channel Power
2PCS 5V 4 Channel Relay
4 Channel Isolated
High/Low Level Trigger
Screwed Terminal Plate
Fixed Bolt Holes
This module provides four independent channels which is great for projects needing multiple outputs. It has a rating of 4.3 stars and is designed for high current loads.
Pros
- 10A per relay
- Opto-isolated digital input
- Stable triggering
- Easy installation
Cons
- Slightly lower rating
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Each relay can individually switch on off by an opto-isolated digital input. The maximum load is AC250V 10A or DC30V 10A providing robust switching capabilities.
The module includes a screwed terminal plate and fixed bolt holes for easy installation. Fault-tolerant design ensures reliability even if the control line breaks.
Select high/low level trigger via jumper for logic flexibility. It is a very versatile solution for controlling a wide range of devices simultaneously.
Robust Mounting Options
Fixed bolt holes and screw terminals make installation secure and straightforward.
Individual Channel Control
Each of the four channels can be managed independently through isolated inputs.
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6. 4pcs DC 5V Relay Module 2 Channel – Bulk Dual Option
4pcs DC 5V Relay Module 2 Channel
2 Channel Isolated
High Current Relay
Trigger Current 5mA
Screwed Terminal Plate
This pack offers two channels per board with high current relay support. It holds a rating of 4.4 stars for its reliable performance and isolation features.
Pros
- High current relay
- Opto-isolated input
- Fault-tolerant design
- Standard interface
Cons
- Requires bulk setup
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Each relay can individually switch on off by an opto-isolated digital input ensuring safety. The maximum load is AC 250V/10A and DC 30V/10A for various loads.
The module is designed with fault-tolerant features so it will not move if the control line breaks. It includes a screwed terminal plate for secure connections.
Standard interface allows direct connection with microcontrollers for easy integration. If you need multiple boards for a larger project this is a practical choice.
Secure Connection Points
Screwed terminals ensure wires stay in place during operation and movement.
Reliable Fault Handling
Design ensures relays do not activate unexpectedly during signal failures.
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7. HiLetgo 2pcs 5V 30A One Channel – High Current Choice
HiLetgo 2pcs 5V 30A One Channel
30A One Channel
Optocoupler Isolation
Friendly Interface Design
Trigger Current 5mA
This module stands out with a 30A capacity which is higher than standard 10A units. It has a rating of 4.6 stars and supports 5V 12V 24V inputs.
Pros
- High current capability
- Strong drive capability
- High and low trigger
- Direct terminal leads
Cons
- Higher price for 30A
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With optocoupler isolation it provides strong drive capability and stable performance. The trigger current is 5mA making it easy to interface with microcontrollers.
Its interface design is friendly with all interfaces directly connected through terminal leads. This convenience reduces wiring time and potential errors during setup.
If you need to handle higher current loads safely this module is ideal. It supports both high and low triggers so you can match your logic easily.
High Current Capacity
Supports 30A loads which is significantly more than standard relay modules.
Versatile Voltage Input
Compatible with 5V 12V and 24V inputs for flexible power sourcing.
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8. ELEGOO 4 Channel DC 5V – Project Ready Module
ELEGOO 4 Channel DC 5V
Four Independent Channels
Active Low Input
JD VCC Configuration
NO NC Wiring
ELEGOO provides four independent 5V relay channels for multiple load control. It has a rating of 4.5 stars and is designed specifically for Arduino projects.
Pros
- Status LED on channel
- Optocoupler equipped
- Flexible wiring
- Compatible with common MCU
Cons
- Requires separate power for isolation
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Each channel uses an active-low input and has its own status LED. This helps with wiring checks and troubleshooting without needing extra tools.
Optocouplers separate the control stages from the relay-drive circuitry. You can use the JD-VCC/VCC configuration for isolated-power setups as needed.
Flexible NO/NC wiring gives you control over default states. It is fully compatible with common MCU projects including AVR and STM32 boards.
Integrated Status LEDs
Each channel has an LED to visually confirm operation status quickly.
Isolated Power Config
Supports JD-VCC options for complete separation of control and load power.
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9. 8 Channel Relay Module DC 5V – High Channel Count
8 Channel Relay Module DC 5V
8 Channel Isolated
High or Low Trigger
15A 125VAC
Fixed Bolt Holes
This board offers eight channels which is excellent for complex automation projects. It holds a rating of 4.5 stars and features opto-isolation for safety.
Pros
- Eight channels isolated
- Individually switchable
- Opto-isolated input
- Standard interface
Cons
- Dense layout
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Each relay can individually switch on off by an opto-isolated digital input. The maximum load is AC 250V 10A and AC 125V 15A for varied applications.
The module design includes fault-tolerant features ensuring it will not move if the control line breaks. It is equipped with a screwed terminal plate and bolt holes.
Path can be triggered by high or low level through jumper setting. It connects directly to a wide range of microcontrollers for seamless control.
High Density Control
Eight channels provide significant control capacity in a single board footprint.
Robust Fault Safety
Fault-tolerant design keeps relays in safe state during control signal loss.
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10. 5V One Channel Relay Module Relay Switch – High Value Pack
5V One Channel Relay Module Relay Switch
Pack of Ten
Dual Indicator Lights
Insulation Design
High Quality Relay
This pack of ten modules offers high value for larger projects needing multiple units. It has a rating of 4.7 stars and features dual indicator lights.
Pros
- Indicator light for power
- Optocoupler insulation
- Humanized interface
- High load capability
Cons
- Requires bulk usage
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Power indicator is green and relay status indicator is red for clear status. The board is insulated with a patch optocoupler to prevent port damage.
The interface is designed for convenience with input and output terminals. It adopts a normally open interface with a high quality relay rated AC 250V/10A.
Suitable for various power control occasions and single-chip microcomputers. If you need bulk units for a production line this is a top choice.
Visual Status Indicators
Separate power and relay status LEDs simplify debugging and monitoring.
Safe Insulation Design
Patch optocoupler insulation protects your microcontroller port from relay spikes.
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Buying Guide – How to Choose the Best 5V Relay Module
Selecting the right relay module involves evaluating several technical aspects to ensure compatibility and safety.
Channel Count
The number of channels determines how many devices you can control with one module. Single channel boards are simpler while 4 or 8 channel options are better for complex projects. Consider your current needs and future expansion when deciding on the count.
Voltage Requirements
Ensure the module operates at 5V to match your microcontroller logic. Some boards support 12V or 24V which offers flexibility for industrial setups. Check the datasheet before powering the board to avoid damage.
Current Rating
Most modules handle 10A which is enough for small appliances. If you need to control high power motors or heaters look for 30A rated boards. Exceeding the current limit can cause relay failure or fire risks.
Optocoupler Isolation
Isolation protects your microcontroller from high voltage spikes during switching. Modules with optocouplers are safer and more reliable. Always choose a board with isolation for professional and long term use.
Trigger Logic
Relays can be triggered by high or low signals. Check if the board supports jumper configuration to switch between these modes. Matching the trigger logic to your code simplifies implementation.
Interface and Terminals
Look for screw terminals which provide secure connections. Boards with direct leads are convenient but terminals offer better stability for permanent setups. Consider the layout when designing your enclosure.
Indicator LEDs
Status LEDs help you visualize the relay state without multimeters. Dual LEDs for power and relay state are useful for troubleshooting. This feature can save time during development.
Build Quality
Genuine relays and robust PCBs ensure longevity. SMD components often offer better space efficiency. Inspect reviews for reliability and durability before making your final selection.
How to Use and Care for Your 5V Relay Module
Connect the VCC and GND pins to your 5V power source ensuring correct polarity. Connect the IN pin to a digital output on your microcontroller to control the relay state.
Wire the load to the COM NO or NC terminals depending on whether you need normally open or closed logic. Secure all wires with screws to prevent loose connections during vibration.
Avoid exceeding the voltage or current ratings to maintain safety. Check the relay click sound periodically to ensure mechanical health. Keep the module in a dry well ventilated area.
Frequently Asked Questions
Why does my relay make a clicking sound?
This sound is normal as the internal electromechanical switch engages. It indicates the relay is successfully opening and closing the circuit to control your load.
Do I need a separate power supply?
Most modules draw 5V from your microcontroller but heavy loads may require external power. Use JD-VCC if available to isolate control and load power for stability.
What is the difference between NC and NO terminals?
NO stands for Normally Open meaning the circuit is open until the relay activates. NC stands for Normally Closed meaning the circuit is closed until the relay activates.
How do I choose between high or low trigger?
Check your microcontroller logic level needs. You can change this via the jumper header on most modules to match your code requirements easily.
Can I use this with Raspberry Pi?
Yes these modules are compatible with Raspberry Pi provided you manage current draw. Using a transistor or driver circuit ensures safe communication with GPIO pins.
Why is optocoupler isolation important?
It provides electrical isolation between the low voltage control circuit and high voltage load. This protects sensitive electronics from damage during relay switching.
Can I chain multiple modules together?
You can connect multiple modules to different GPIO pins on your microcontroller. Ensure your power supply can handle the cumulative current draw of all active relays.
What are typical applications for these modules?
They are used for home automation motor control lighting systems and safety interlocks. They allow low voltage logic to safely switch high voltage AC or DC loads.
Final Thoughts on Choosing the Best 5V Relay Module
Our top picks range from budget single channel boards to robust multi channel options with high current capacity. Each module reviewed offers unique benefits depending on your project needs and load requirements.
Prioritize isolation and build quality to ensure long term reliability in your projects. Safety should always be the primary concern when dealing with AC and high voltage applications.
Remember to check current availability and stock before ordering to avoid project delays. Verify the details and specs match your specific microcontroller and load requirements perfectly.