5v Relay Module 5V Indicator Light LED
4.6Editor score
Low cost option
LED indicator light
Simple wiring
In this guide
Relay modules are essential for controlling high voltage devices with low voltage logic. A good 5V relay module offers isolation and reliable switching for your projects.
We evaluated ten popular options based on channel count, safety features, and compatibility. Each product was selected for its reputation and real world performance in automation.
Each pick shows key specs and use cases to simplify your decision. Note that prices and availability change frequently so check current listings before buying.
Top 3 Picks for Best 5V Relay Module
4pcs DC 5V Relay Module
4.6Editor score
Optocoupler isolation
High or low trigger
Screw terminals
ELEGOO 4 Channel DC 5V Relay Module
4.5Editor score
Four independent channels
Status LEDs
Secure terminals
Top 10 Best 5V Relay Module in 2026 Compared
This side by side comparison highlights the key differences between each model to help you find the best fit for your specific control needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
4pcs DC 5V Relay Module
1 Channel per board
Opto isolation
10A max load
High low trigger
4.6Editor score
Editor's Choice
HiLetgo 2pcs 5V One Channel Relay Module
1 Channel per board
SMD optocoupler
10A max load
Human interface design
4.6Editor score
Best Premium
SunFounder 2 Channel DC 5V Relay Module
2 Channel board
LED indication
Standard interface
Compact size
4.6Editor score
5v Relay Module 5V Indicator Light LED
1 Channel board
TTL signal
Normal open closed
Appliance control
4.6Editor score
2PCS 5V 4 Channel Relay with Optocoupler
4 Channel board
Opto isolated
High 10 load
Easy install
4.3Editor score
4pcs DC 5V Relay Module 2 Channel Relay Board
2 Channel board
Opto isolated
Fault tolerant
Screw terminal
4.4Editor score
HiLetgo 2pcs 5V 30A One Channel Relay Module
1 Channel board
30A max load
Strong drive
Friendly interface
4.6Editor score
ELEGOO 4 Channel DC 5V Relay Module
4 Channel board
Status LEDs
10A rating
Flexible wiring
4.5Editor score
8 Channel Relay Module DC 5V Relay Board
8 Channel board
High low trigger
Fault tolerant
Standard interface
4.5Editor score
5V One Channel Relay Module Relay Switch (Pack of 10)
1 Channel board
Dual indicator
Insulation design
Wide application
4.7Editor score
1. 4pcs DC 5V Relay Module – Best Overall 5V Relay Module
4pcs DC 5V Relay Module
1 Channel per unit
Optocoupler isolation
10A max load
High low trigger
This module offers a robust solution for switching high loads safely using optocoupler isolation. It features a clear 1 Channel layout that works well with most microcontrollers.
Pros
- Strong driving ability
- Stable performance
- Safe isolation circuit
- Flexible jumper design
- Wide compatibility
Cons
- Multiple units needed
- Standard sizing
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The fault tolerant design ensures safety even if the control line breaks. Users appreciate the ability to set high or low trigger states easily via jumpers.
While it does not include multiple channels on one board the reliability is top notch. The screw terminals make wiring secure and accessible for long term projects.
Ideal for builders who need dependable switching across several projects. This module balances price and performance better than many competitors in the market.
Safe Isolation Design
The isolation circuit prevents relay switch current from damaging your I O port ensuring long term safety for your logic board.
Flexible Trigger Options
A jumper allows you to configure the module to respond to either high or low signals fitting your specific control logic needs.
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2. HiLetgo 5V One Channel – Reliable Isolated Switching
HiLetgo 2pcs 5V One Channel Relay Module
1 Channel per unit
SMD optocoupler
10A max load
Human interface
This package includes two modules providing excellent value for small scale automation needs. It uses a genuine quality relay for consistent switching performance.
Pros
- Genuine quality relay
- Strong driving capability
- Fault tolerant design
- Convenient terminals
- Stable performance
Cons
- Limited channels
- Basic design
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The SMD optocoupler isolation provides strong driving capability and stable operation. Interfaces are designed for direct connection which simplifies wiring for users.
While the design is simple it offers the essential safety features needed for high voltage control. The fault tolerant feature adds peace of mind during testing.
Great for hobbyists needing a couple of reliable channels. This module is a solid choice for standard control tasks without extra complexity.
Direct Connection Terminals
All interfaces are available through direct connection terminal leads making it very convenient to wire up without extra connectors.
Trigger Flexibility
You can set the module by jumper to respond to high or low triggers allowing flexibility in your control signal logic.
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3. SunFounder 2 Channel Module – Compact Dual Channel
SunFounder 2 Channel DC 5V Relay Module
2 Channel board
LED indication
Standard interface
Compact dimensions
This board combines two relay channels on a single compact PCB saving space in your project enclosure. It is designed to be driven directly by most microcontrollers.
Pros
- 2 Channel integration
- High-current relay
- LED status indication
- Wide compatibility
- Small footprint
Cons
- Specific low trigger
- Fixed wiring
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Each channel uses a high-current relay capable of handling up to 10A loads safely. LED indicators provide clear visual feedback on the status of each output.
The size is small enough for tight spaces while still offering standard interface connections. It works well with Arduino and Raspberry Pi boards out of the box.
Perfect for projects needing two switches in a small footprint. Consider this if you want a tidy dual channel solution without bulky wiring.
Visual Status Feedback
Indication LEDs show the relay output status making it easy to troubleshoot connections without needing a multimeter.
Standard Interface Design
The board features a standard interface that can be controlled directly by a wide range of microcontroller logic levels.
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4. 5V Relay Module LED – Most Affordable Option
5v Relay Module 5V Indicator Light LED
1 Channel board
TTL signal
Normal open closed
Appliance control
This module provides a simple and cost effective way to control appliances with microcontroller digital signals. It includes an indicator light to show power and status clearly.
Pros
- Low cost entry
- Clear LED light
- Simple setup
- Versatile control
- Standard connections
Cons
- Basic build
- Single channel only
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You can use it to control DC or AC loads up to the specified limits safely. The interface supports TTL signals from 5V to 12V making it versatile.
It features both normally open and normally closed contacts for flexible wiring needs. While basic it is useful for beginners learning relay concepts.
Ideal for those on a tight budget needing basic control. This module gets the job done for simple tasks like controlling lights or fans.
Simple Digital Control
Just connect a digital output from your board to control the module easily without complex programming or extra hardware.
Dual Contact Configuration
There is a normally open and normally closed contact allowing you to choose the logic that fits your circuit.
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5. 2PCS 4 Channel Relay – High Density Control
2PCS 5V 4 Channel Relay with Optocoupler
4 Channel board
Opto isolated
High load rating
Bolt holes
This module offers four isolated channels allowing control of multiple devices from a single board. It is ideal for complex automation tasks requiring multiple switches.
Pros
- 4 Independent channels
- Direct microcontroller connection
- Fault tolerant design
- Easy installation
- Reliable isolation
Cons
- Slightly higher price
- Large footprint
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Each relay can switch individually via opto-isolated digital inputs for safety and reliability. The fault tolerant design ensures safe operation even if control lines fail.
It includes fixed bolt holes for easy mounting on a panel or wall. The high current rating supports heavy loads like motors or large lights.
Perfect for larger projects needing multiple control points. This board is a strong choice for industrial or robust DIY automation setups.
Individual Switching Control
Each relay can individually switch on off by an opto-isolated digital input giving you precise control over each load.
Secure Mounting Options
Equipped with screwed terminal plates and fixed bolt holes for easy installation in permanent project enclosures.
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6. 2 Channel Relay Board – Dual Output Safety
4pcs DC 5V Relay Module 2 Channel Relay Board
2 Channel board
Opto isolated
Fault tolerant
Screw terminal
This module provides two isolated channels for controlling separate loads with high reliability. It supports both high and low level trigger modes via jumper settings.
Pros
- 2 Channels per board
- High current relay
- Reliable triggering
- Stable isolation
- Standard interface
Cons
- Two units needed
- Average rating
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The fault tolerant design ensures safety if the control line breaks during operation. Opto-coupling isolation makes triggering more reliable and stable over time.
It comes with a screwed terminal plate and bolt holes for secure mounting. Each channel can individually switch on and off through isolated inputs.
Great for applications needing redundant or dual control paths. This board balances safety features with standard connectivity for easy integration.
Individual Channel Control
Each relay can individually switch on off by an opto-isolated digital input for independent control of each load.
Stable Triggering
Optical coupling isolation ensures triggering is more reliable and stable reducing the risk of accidental switching.
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7. HiLetgo 30A Relay – Heavy Duty Switching
HiLetgo 2pcs 5V 30A One Channel Relay Module
1 Channel board
30A max load
Strong drive
Terminal leads
This module stands out with its high current rating capable of handling up to 30A loads safely. It is perfect for switching heavy motors or industrial equipment.
Pros
- High current rating
- Optocoupler isolation
- Strong drive capability
- Stable performance
- Convenient terminals
Cons
- High power rating
- Single channel
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Optocoupler isolation provides a strong drive capability and stable performance under load. The friendly interface design allows all interfaces to be connected directly.
It supports 5V 12V and 24V control signals offering versatile operation. The terminal leads make connection convenient for high power wiring tasks.
Ideal for projects involving high power consumption devices. Choose this if you need extra current capacity without compromising on isolation safety.
High Current Capacity
Designed to handle up to 30A of current allowing control of high power appliances safely and efficiently.
Versatile Signal Support
Supports 5V 12V and 24V control signals making it adaptable to different voltage logic systems.
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8. ELEGOO 4 Channel – Professional Grade Quality
ELEGOO 4 Channel DC 5V Relay Module
4 Independent channels
Active-low input
Status LEDs
Secure terminals
This module offers four independent channels with status LEDs for easier wiring checks and troubleshooting. Each channel uses an active-low input for reliable control.
Pros
- Four separate channels
- Status LEDs
- Secure terminals
- Active-low design
- Flexible wiring
Cons
- Slightly pricey
- Fixed logic
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Optocouplers separate input stages from drive circuitry for added safety. Flexible NO NC screw terminals allow you to choose the wiring logic that suits your circuit.
It supports up to 10A at 250V AC or 30V DC under specified conditions. The design is robust and well suited for complex Arduino projects.
Best for professionals needing multiple secure channels. This module is excellent for projects requiring detailed wiring control and safety.
Independent Channel Control
Control four separate loads from compatible microcontroller outputs with independent active-low inputs for each channel.
Secure Screw Terminals
Each relay channel includes NO COM and NC screw terminals allowing flexible normally open or normally closed operation.
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9. 8 Channel Relay Board – Maximum Channel Count
8 Channel Relay Module DC 5V Relay Board
8 Channel board
High low trigger
High current relay
Standard interface
This board offers eight isolated channels allowing extensive control in a single unit. It supports high or low level triggering via jumper settings for flexibility.
Pros
- 8 Independent channels
- Opto isolated
- High load capacity
- Fault tolerant
- Easy mounting
Cons
- Large size
- Complex wiring
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Each relay can individually switch on off through an opto-isolated digital input for safety. The module is designed with fault tolerant features to prevent accidental activation.
It supports high current relays rated for significant loads like motors or large lighting arrays. Fixed bolt holes and a screwed terminal plate make mounting easy.
Perfect for large scale automation needing many switch points. This board is the top choice if you need maximum channel density in one module.
Extensive Control Capacity
Eight channels can be triggered by high or low level through jumper setting allowing extensive independent control options.
Fault Tolerant Safety
Designed with fault tolerant features ensuring the relay will not move even if the control line breaks unexpectedly.
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10. Pack of 10 Modules – Bulk Value
5V One Channel Relay Module Relay Switch
1 Channel board
Dual indicator
Insulation design
Pack of 10
This pack provides ten modules which is ideal for large teams or multiple small projects needing spare units. Each board includes dual indicator lights for clear power and status feedback.
Pros
- Bulk quantity
- Dual indicator lights
- Insulated design
- High load support
- Wide application
Cons
- Many units unused
- Simple design
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The insulation design prevents relay switching current from damaging the I O port ensuring safety. High quality relays support loads up to 10A at 250V AC.
The interface design is humanized making wiring convenient and straightforward. It suits a wide range of applications from home automation to industrial control.
Ideal for bulk buyers stocking parts for various builds. This pack offers excellent value with reliable features for repetitive or distributed tasks.
Dual Indicator Feedback
Includes power supply and working dual indicator lights showing both power and relay status clearly at a glance.
Insulated Circuit Design
The relay board is insulated with a patch optocoupler preventing damage to the I O port during switching operations.
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Buying Guide – How to Choose the Best 5V Relay Module
Selecting the right relay module involves considering key factors that affect performance and safety in your specific application.
Channel Count
The number of channels determines how many loads you can control with a single board. A 1 Channel module is simple but requires multiple boards for multiple devices while 4 or 8 Channel boards offer higher density.
Choose a module with enough channels to fit your project needs without wasting space or wiring.
Isolation Type
Optocoupler isolation separates the logic side from the power side protecting your microcontroller from voltage spikes. Look for modules that use high quality optocouplers.
Prioritize modules with solid isolation to ensure your control board remains safe during switching events.
Trigger Level
Modules usually support high or low level triggers which defines what signal state activates the relay. Many boards let you change this with a jumper.
Select a board that matches the logic level of your microcontroller for seamless integration.
Load Capacity
Check the maximum current and voltage ratings for the relay contacts. Typical modules handle 10A at 250V AC or 30V DC but higher capacity options exist.
Ensure the relay rating exceeds your load requirements to avoid overheating or premature failure.
Safety Features
Fault tolerant design ensures the relay does not activate accidentally if a wire breaks. This adds a critical layer of safety for unattended or industrial projects.
Look for boards that explicitly mention fault tolerant or fail safe features for better reliability.
Wiring and Mounting
Screw terminals make connections secure and easier to change than soldered wires. Bolt holes allow you to mount the board firmly in an enclosure or panel.
Choose a module with robust terminals and mounting options to reduce wiring issues over time.
Indicator Lights
LED indicators show when the relay is active and when the board has power. This visual feedback helps troubleshoot wiring issues quickly.
Modules with dual indicator lights save time during setup and debugging.
Compatibility
Most 5V relay modules work with Arduino Raspberry Pi and other logic boards. Check the input voltage range to ensure it fits your system.
Pick a module that matches your project's control voltage to avoid needing extra components.
How to Use and Care for Your 5V Relay Module
Connect the VCC and GND pins to your 5V power source ensuring you do not exceed the current limit. Most microcontrollers cannot power many relays so use a separate supply if needed.
Wire your load to the Common NO and NC terminals depending on whether you need the circuit closed or open when idle. Test with a multimeter before connecting high voltage.
Secure the module with screws or bolts to prevent vibration from loosening connections. Keep the module away from excessive heat or moisture for longest life.
Frequently Asked Questions
Can I use this relay with a 3.3V microcontroller?
Many modules require 5V logic but some can be driven by 3.3V if the threshold is low. Check the datasheet for input voltage ranges before connecting. If not compatible use a transistor or logic level shifter.
How do I know if I need high or low trigger?
Depends on your code logic. High trigger activates with a logic HIGH signal while low trigger activates with logic LOW. Most boards allow changing this with a jumper setting.
Is the 5V power drawn from my controller safe?
No a single relay coil draws 70 to 100mA which may exceed a controller pin limit. Use a separate power supply or buffer circuit to protect your board.
What is the difference between NO and NC terminals?
NO stands for Normally Open and connects only when the relay activates. NC stands for Normally Closed and disconnects when activated. Choose based on your default circuit state needs.
Can I switch AC and DC with the same module?
Yes most 5V relay modules handle both AC and DC within their rated limits. Always respect the voltage and current ratings for each type to ensure safety.
How do I protect my module from voltage spikes?
Use a flyback diode across the coil or choose a module with built in protection. This suppresses spikes generated when the relay deactivates.
Final Thoughts on Choosing the Best 5V Relay Module
We reviewed ten reliable options ranging from basic 1 Channel boards to complex 8 Channel solutions. Each offers solid isolation and performance for standard automation needs.
Prioritize safety features like optocoupler isolation and fault tolerant design for any high voltage project. Match the channel count and trigger level to your controller's requirements.
Always check current pricing and stock before ordering as availability varies by region. Select the model that fits your project scale and budget for best results.