4pcs DC 5V Relay Module
4.6Editor score
Optocoupler isolation included
High or low trigger
Screw terminals provided
In this guide
Relay modules are essential components for electronic hobbyists and professionals alike. They allow low voltage circuits to control high power devices safely. Finding the right module ensures stable operation and protects your sensitive microcontrollers from voltage spikes and current surges during switching.
We evaluated ten popular models based on isolation quality, channel count, and trigger flexibility. Each product was analyzed for build quality, interface design, and compatibility with common boards like Arduino and Raspberry Pi. Our goal is to highlight reliability and ease of use in real world scenarios.
Every selection in this list offers unique advantages for different project needs. Whether you need single channel simplicity or multi-channel control, we cover the options. Please note that availability and specific terms may change over time so verify current details before purchasing your final choice.
Top 3 Picks for Best 5V Relay Module
SunFounder 2 Channel DC 5V Relay Module
4.6Editor score
Compatible with many MCUs
LED status indicators
Standard interface design
ELEGOO 4 Channel DC 5V Relay Module
4.5Editor score
Four independent channels
JD-VCC VCC config
Active low input
Top 10 Best 5V Relay Module in 2026 Compared
This table presents a side-by-side overview of all ten selected modules. It highlights key specifications like channel count, trigger options, and isolation methods to help you quickly identify the model that fits your specific project requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
4pcs DC 5V Relay Module
1 Channel per module
Optocoupler Isolation
5V Operating Voltage
10A Load Capacity
4.6Editor score
Editor's Choice
HiLetgo 2pcs 5V One Channel Relay Module
1 Channel per module
SMD Optocoupler
5V Operating Voltage
10A Load Capacity
4.6Editor score
Editor's Choice
SunFounder 2 Channel DC 5V Relay Module
2 Channels per board
Low Level Trigger
5V Operating Voltage
LED Indicators
4.6Editor score
5v Relay Module 5V Indicator Light LED
1 Channel per board
LED Indicator Light
5V to 12V
NO NC Contacts
4.6Editor score
2PCS 5V 4 Channel Relay
4 Channels per board
High/Low Trigger
10A Load Capacity
Screw Terminal Plate
4.3Editor score
4pcs DC 5V Relay Module 2 Channel
2 Channels per module
Optocoupler Isolation
5V Operating Voltage
Fault-Tolerant Design
4.4Editor score
HiLetgo 2pcs 5V 30A One Channel Relay Module
1 Channel per module
30A Load Capacity
High Low Trigger
Optocoupler Isolation
4.6Editor score
ELEGOO 4 Channel DC 5V Relay Module
4 Channels per board
Active Low Input
10A Load Capacity
JD-VCC VCC Config
4.5Editor score
8 Channel Relay Module DC 5V
8 Channels per board
Opto Isolated
High Low Trigger
10A Load Capacity
4.5Editor score
5V One Channel Relay Module Pack of 10
1 Channel per module
Dual Indicator Lights
Optocoupler Isolation
Pack of 10
4.7Editor score
1. 4pcs DC 5V Relay Module – Best Budget Option
4pcs DC 5V Relay Module
5V Operating Voltage
10A AC DC Load
Optocoupler Isolation
Screw Terminals
This module stands out as an excellent entry point for those needing basic control. It features a 5V relay with optocoupler isolation to protect your microcontroller. The design allows for high or low level triggering via a jumper which adds flexibility to your wiring logic.
Pros
- Great value for money
- Strong driving ability
- Stable performance
- Fault tolerant design
- Works with many MCUs
Cons
- Single channel per board
- No external power jack
We may earn a commission when you buy through this link, at no additional cost to you.
The fault tolerant design ensures safety even if the control line breaks. Interfaces are clearly marked for NC C and NO allowing straightforward connections. It works well with ARM PIC AVR MCU and Raspberry Pi systems making it a versatile choice for various hobby projects.
While it is a single channel unit the build quality supports reliable switching. The terminals are robust enough for secure connections without soldering. However users needing multiple channels per board might prefer a multi relay version for compact wiring setups.
Overall this is a solid choice for beginners or bulk needs. It balances cost and functionality effectively. If you require a simple reliable switch for appliances or motors this module delivers consistent performance without unnecessary complexity or high cost.
Protection and Safety
Optocoupler isolation prevents relay current from damaging I/O ports.
Trigger Flexibility
Jumper settings allow you to choose high or low signal triggers easily.
We may earn a commission when you buy through this link, at no additional cost to you.
2. HiLetgo 2pcs 5V One Channel Relay Module – Great for Bulk Projects
HiLetgo 2pcs 5V One Channel Relay Module
1 Channel per module
5V Operating Voltage
10A AC DC Load
Human Friendly Interface
Getting two modules in one pack makes this a smart buy for multiple small projects. Each board uses a genuine quality relay with SMD optocoupler isolation for stability. The trigger current is low at 5mA which is gentle on most microcontroller GPIO pins.
Pros
- Sold in pairs
- SMD optocoupler
- Direct terminal leads
- Easy jumper setting
- Stable performance
Cons
- Single channel per module
- Basic enclosure design
We may earn a commission when you buy through this link, at no additional cost to you.
The interface design prioritizes convenience with direct connection terminal leads. This reduces the need for extra wires or adapters when connecting to your board. A jumper allows you to set high or low trigger levels to match your specific circuit logic needs.
Fault tolerance is a key feature ensuring the relay stays safe if wiring fails. This reliability is crucial for long term automation tasks where signal integrity matters. The load capacity handles standard household appliances and DC loads without overheating under normal conditions.
If you need multiple switches for home automation or lighting control this pack is ideal. It offers consistent performance across both units. The simplicity of design means you spend less time troubleshooting and more time building your actual application or system.
Value Pack
Receiving two units helps you plan for redundancy or multiple zones easily.
Ease of Use
Terminal leads simplify wiring to your power sources and loads.
We may earn a commission when you buy through this link, at no additional cost to you.
3. SunFounder 2 Channel DC 5V Relay Module – Editor's Choice
SunFounder 2 Channel DC 5V Relay Module
2 Channels per board
Low Level Trigger
5V Operating Voltage
LED Status Indicators
This module offers two independent channels on a single board which saves space. It is designed with a low level trigger and works with a wide range of microcontrollers. LED indicators show the relay status clearly helping you verify operations during testing and debugging phases.
Pros
- Two independent channels
- Wide MCU compatibility
- Clear LED indicators
- Compact size
- High current relay
Cons
- Fixed low trigger mode
- No isolation power config
We may earn a commission when you buy through this link, at no additional cost to you.
The compatibility list includes Arduino MEGA Raspberry Pi and many ARM based boards. This makes it a versatile pick for projects requiring multiple outputs without cluttering your breadboard. The high current relay supports AC and DC loads effectively for most standard tasks.
While the trigger mode is fixed the design is robust for typical applications. The size is compact enough to fit in larger enclosures without taking up too much room. You get a standard interface that connects directly to your development board's digital pins.
For projects needing dual outputs this board provides excellent balance. It simplifies wiring for dual control scenarios like lights and fans. If you need reliable dual channel switching with clear status feedback this module is a strong and trusted option for your build.
Dual Control
Two channels allow you to control two devices from one small board.
Visual Feedback
LEDs give instant visual confirmation of relay activation states.
We may earn a commission when you buy through this link, at no additional cost to you.
4. 5v Relay Module 5V Indicator Light LED – Clear Visual Feedback
5v Relay Module 5V Indicator Light LED
1 Channel per module
LED Indicator Light
5V to 12V Control
NO NC Contacts
This simple module features a clear LED indicator light to show when the relay activates. It accepts a 5V to 12V control signal from TTL logic boards. You can control DC or AC signals including 220V loads using the normally open and normally closed contacts.
Pros
- Indicator light visible
- Works with TTL
- Controls AC loads
- Standard NO NC
- Simple setup
Cons
- Basic layout only
- No screw terminals
We may earn a commission when you buy through this link, at no additional cost to you.
It is useful for controlling motors led strips or power demanding appliances. The connection involves a digital output from your board to the module which is straightforward. The design focuses on essential functionality without extra bulk or complex configuration steps.
The lack of screw terminals means you might need to solder wires directly. This could be a limitation for quick testing but works fine for permanent installs. The indicator light helps you confirm operation even without a multimeter or logic analyzer nearby.
For simple control tasks where visibility matters this module works well. It is small and easy to integrate into custom projects. If you need a basic relay with a visual status cue this unit provides exactly what is needed for reliable switching control.
Status Visibility
The LED light lets you see relay state at a glance easily.
Voltage Flexibility
Control signals can range from 5V up to 12V for versatility.
We may earn a commission when you buy through this link, at no additional cost to you.
5. 2PCS 5V 4 Channel Relay – High Channel Density
2PCS 5V 4 Channel Relay
4 Channels per board
High/Low Trigger
10A Load Capacity
Screw Terminal Plate
This board provides four independent channels for controlling multiple loads at once. Each relay uses opto-isolated digital inputs which improves reliability and isolation. You can switch on or off individually using a jumper to select high or low level triggers for logic.
Pros
- Four independent channels
- Individual opto isolation
- Screw terminals included
- Bolt holes for mount
- High load capacity
Cons
- Larger board size
- Requires more power
We may earn a commission when you buy through this link, at no additional cost to you.
It is equipped with high current relays supporting up to 10A AC or DC loads. Screw terminal plates make connections secure and easy to modify later. Fixed bolt holes allow you to mount the board firmly inside an enclosure for safety.
The fault tolerant design ensures the relay stays in a safe state if a control line breaks. This stability is important for critical automation systems. You will need to manage power carefully since four relays draw more current than a single channel unit.
Ideal for complex projects needing many outputs like home automation hubs. It reduces the number of boards you need to connect. If you require multiple relays in a compact form with secure connections this module is a capable and robust solution.
Multi Control
Four channels let you manage several devices from one interface point.
Secure Mounting
Bolt holes ensure the board stays fixed during vibration or movement.
We may earn a commission when you buy through this link, at no additional cost to you.
6. 4pcs DC 5V Relay Module 2 Channel – Dual Channel Value
4pcs DC 5V Relay Module 2 Channel
2 Channels per module
5V Operating Voltage
10A Load Capacity
Fault-Tolerant Design
These modules offer two isolated channels on each board for efficient control. They use optocoupler isolation to protect the input from relay spikes. Each relay can switch independently allowing for flexible logic in your automation or control systems.
Pros
- Dual channel per board
- Opto isolated inputs
- Screwed terminal plate
- Stable triggering
- Standard MCU interface
Cons
- Basic layout design
- No status LEDs
We may earn a commission when you buy through this link, at no additional cost to you.
The fault tolerant design ensures safety even when control lines are compromised. Screwed terminal plates provide robust connection points for power and load wires. The interface is standard so you can connect directly to microcontrollers without adapters.
You get a high current relay capability suitable for household appliances. The trigger current is low which works well with digital outputs. While it lacks visual indicators the reliability of the circuit is solid for consistent performance over time.
This is a good pick for those needing dual control without bulk. It balances features and simplicity effectively. If you want reliable dual channel switching with strong isolation this board fits well into various industrial or hobbyist projects easily.
Independent Control
Each channel can be switched on or off separately as needed.
Secure Wiring
Screw terminals keep connections tight and prevent accidental disconnections.
We may earn a commission when you buy through this link, at no additional cost to you.
7. HiLetgo 2pcs 5V 30A One Channel Relay Module – Heavy Load Capacity
HiLetgo 2pcs 5V 30A One Channel Relay Module
1 Channel per module
30A Load Capacity
5V to 24V Control
Optocoupler Isolation
This module handles much higher loads with a 30A capacity for demanding tasks. It supports control voltages from 5V up to 24V for broader system compatibility. Optocoupler isolation provides strong drive capability and stable performance during heavy current switching operations.
Pros
- 30A load capacity
- Strong drive capability
- High or low trigger
- Dual indicator lights
- Friendly interface
Cons
- Single channel per board
- Larger module size
We may earn a commission when you buy through this link, at no additional cost to you.
The interface is designed for direct connection through terminal leads which is convenient. You can select high or low trigger via jumper to match your circuit. Indicator lights show power and relay status clearly so you know the state at all times.
While it is a single channel unit the robust rating makes it ideal for mains loads. It simplifies wiring for high power equipment without needing extra relays. The dual indicator lights help in troubleshooting power or signal issues quickly.
If your project needs to switch high current devices safely this module is perfect. It balances capacity with ease of use well. For heavy duty control where reliability is key this relay offers strong performance and straightforward integration into power systems.
High Current Support
The 30A rating allows switching of larger appliances and motors safely.
Clear Status
Dual indicators separate power and relay activity for better visibility.
We may earn a commission when you buy through this link, at no additional cost to you.
8. ELEGOO 4 Channel DC 5V Relay Module – Premium Quality
ELEGOO 4 Channel DC 5V Relay Module
4 Channels per board
Active Low Input
10A Load Rating
JD-VCC VCC Config
ELEGOO is known for quality components which reflects in this relay board. It offers four independent channels with individual status LEDs for easy checks. Optocoupler input stages separate control from drive circuitry ensuring safe isolation levels.
Pros
- Quality component build
- Independent channels
- Status LEDs included
- Flexible NO/NC
- Compatible with many boards
Cons
- Requires JD-VCC setup
- Higher price point
We may earn a commission when you buy through this link, at no additional cost to you.
The JD-VCC VCC configuration allows for isolated power setups if your project needs. Each channel supports NO COM and NC terminals for flexible wiring choices. Active low input is standard so you will need to configure your code accordingly.
While the board requires careful power wiring the reliability is worth it. The screw terminals are robust and the layout is well organized for wiring. This makes troubleshooting simpler when you can trace each channel with its own LED indicator.
For professional or advanced hobbyists this board offers great precision and safety. If you value build quality and clear status feedback this module delivers. It is a top choice for complex Arduino projects needing reliable multi load control.
Isolated Power
JD-VCC option lets you isolate the relay coil from your MCU supply.
Clear Status
Each channel has a dedicated LED so you track states accurately.
We may earn a commission when you buy through this link, at no additional cost to you.
9. 8 Channel Relay Module DC 5V – Maximum Control Density
8 Channel Relay Module DC 5V
8 Channels per board
Opto Isolated
10A Load Capacity
High/Low Trigger
This board provides eight independent channels for extensive control projects. Each relay can switch individually via opto-isolated digital inputs for safety. You can select high or low level triggers through jumper settings to match your logic needs.
Pros
- Eight independent channels
- Individual opto isolation
- Screw terminal plate
- Fault tolerant design
- Standard MCU interface
Cons
- Large board footprint
- Power management critical
We may earn a commission when you buy through this link, at no additional cost to you.
The high current relay capacity handles standard loads efficiently across all channels. A screwed terminal plate ensures secure connections for power and loads. Bolt holes allow fixed mounting inside enclosures which is vital for industrial safety.
Fault tolerant design keeps relays safe if control lines are broken. You will need a stable power supply to drive all eight coils without drops. This module is great for central control units needing many outputs in one place.
If you need maximum control points in a single board this is ideal. It saves space compared to stacking multiple small boards. For large scale automation or control systems this board offers robust and flexible multi relay solutions.
High Density
Eight channels reduce the need for multiple separate modules in builds.
Isolation
Opto isolation on every channel protects your main controller from noise.
We may earn a commission when you buy through this link, at no additional cost to you.
10. 5V One Channel Relay Module Pack of 10 – Bulk Supply
5V One Channel Relay Module Pack of 10
1 Channel per module
Optocoupler Isolation
10A Load Capacity
Pack of 10 units
Getting ten units in a pack is perfect for workshops or multiple builds. Each board uses a patch optocoupler for insulation and protection. There are dual indicator lights for power and working status which helps in tracking operation clearly.
Pros
- Ten units included
- Dual indicator lights
- Insulation design
- High quality relay
- Simple human interface
Cons
- Basic single channel
- No mounting screws
We may earn a commission when you buy through this link, at no additional cost to you.
The humanized design simplifies wiring with input output terminals ready to use. You get a normally open interface relay with strong quality for consistent performance. It works with all kinds of single chip microcomputers for broad application support.
While basic the reliability of these units is high for a pack. The insulation circuit prevents switching current from damaging your MCU port. You will need to plan for mounting since the boards are small and compact by design.
This is an excellent stock option for prototyping or production runs. If you need many relays for distributed control this value pack fits well. It offers a cost effective way to deploy reliable switching across multiple locations or projects.
Bulk Value
Ten units let you equip many systems or test various designs easily.
Insulation
Optocoupler insulation protects your control pins from relay spikes.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best 5V Relay Module
Selecting the right relay module depends on your project needs and environment. Consider these factors to ensure safety and reliability.
Channel Count
Decide how many loads you need to control at once. Single channel boards are simpler while multi-channel boards save space for complex projects.
Choose the channel count that matches your load requirements without overbuying.
Isolation Type
Optocoupler isolation is critical to protect your microcontroller from high voltages. Ensure the module uses opto-isolators to separate control from relay circuits.
Always prioritize modules with optocoupler isolation for safety.
Trigger Logic
Check if the module supports high or low level triggering. Some boards allow jumper changes while others are fixed to one logic level.
Pick a trigger mode that matches your microcontroller output requirements.
Load Capacity
Verify the voltage and current ratings of the relay contacts. Most modules handle 10A at 250V AC but ensure it meets your appliance specs.
Match the load capacity to your device to prevent relay failure.
Terminal Design
Look for screw terminals which make wiring easier and more secure than solder pins. Some boards have fixed bolts for enclosure mounting as well.
Choose screw terminals for easier assembly and safer connections.
Indicator Lights
LED indicators help you see the power and relay status at a glance. This is useful for debugging and troubleshooting during operation.
Modules with LEDs simplify monitoring and error detection.
Packaging
Buyers often need multiple modules for larger projects. Packs of two or ten provide better value than buying single units.
Consider packs if you need multiple units to reduce costs.
Brand Reputation
Choose reputable brands known for quality control and reliable components. This reduces the risk of defective units or inconsistent performance.
Prioritize established brands for better quality and reliability.
How to Use and Care for Your 5V Relay Module
Connect the relay module to your microcontroller by matching VCC GND and trigger pins. Ensure you use an external power source for the relay coil if needed to avoid voltage drops.
Wire the load to the COM NC or NO terminals depending on your needs. Use appropriate wire gauges for the current flowing through the contacts to prevent heating.
Store unused modules in a dry place to avoid oxidation. Inspect terminals regularly for wear and clean them if connections become loose over time.
Frequently Asked Questions
Do 5V relay modules need an external power source?
Yes many modules draw significant current for the coil which can drop voltage on your controller. Using an external 5V source with shared ground is recommended.
Can I use these with 3.3V microcontrollers?
Some modules work directly with 3.3V logic but it is safer to use a level shifter. This ensures reliable triggering without risking the GPIO pins.
What is the difference between NO and NC terminals?
NO means Normally Open so the circuit closes when the relay is on. NC means Normally Closed so the circuit opens when the relay is on.
Why do I need optocoupler isolation?
Optocoupler isolation protects your microcontroller from voltage spikes caused by the relay switching. This prevents damage to your controller's input output pins.
Can I control AC motors with these modules?
Yes these modules are rated for AC loads up to 250V at 10A. Ensure your motor current is within the rated limit for safe operation.
How do I change trigger logic from low to high?
Many boards have a jumper to select high or low level triggers. Move the jumper to the opposite pins to change the logic state.
Final Thoughts on Choosing the Best 5V Relay Module
We have reviewed ten top models offering diverse options from single to eight channels. Each module brings unique advantages in isolation capacity and ease of use for your needs.
Prioritize safety by choosing modules with optocoupler isolation and robust terminals. Ensure the load capacity matches your project requirements for long term reliability.
Always check the latest details before purchasing as specifications can vary. Find the model that best fits your specific project for optimal performance.