HiLetgo 5pcs DHT11
4.5Editor score
Single wire digital output
20 to 95 percent RH range
Simple integration for beginners
In this guide
Choosing the right humidity sensor for your Arduino projects is essential for accurate environmental monitoring. Whether you are building a weather station or a smart home system, reliable data collection starts with quality hardware.
We have evaluated ten highly rated modules based on their technical specifications, user reviews, and integration capabilities. Our analysis focuses on accuracy, voltage requirements, and communication protocols to ensure compatibility.
Each selection highlights unique strengths suitable for different application needs. Keep in mind that product availability and pricing may fluctuate over time, so verify current details before making your final purchase decision.
Top 3 Picks for Best Arduino Humidity Sensor
Teyleten Robot SHT31
4.7Editor score
High precision I2C interface
Wide temperature measurement range
Stable long term readings
Teyleten Robot DHT22
4.4Editor score
Broader humidity range capability
Higher temperature accuracy levels
Compact mounting design
Top 10 Best Arduino Humidity Sensor in 2026 Compared
The following table provides a side-by-side overview of the top ten humidity sensor modules. It highlights key specifications such as measurement ranges, accuracy levels, and communication protocols to aid your selection process.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo 5pcs DHT11
20 to 90 percent RH
0 to 50 degrees Celsius
Single bus digital signal
3.3 to 5 volt DC
4.5Editor score
Editor's Choice
2pcs DHT11
20 to 95 percent RH
0 to 50 degrees Celsius
Digital output signal type
3.3 to 5 volt DC
4.3Editor score
Editor's Choice
Teyleten Robot SHT31
0 to 100 percent RH
40 to 125 degrees C
I2C interface output type
2.4 to 5.5 volt DC
4.7Editor score
HiLetgo 2pcs DHT22
0 to 100 percent RH
40 to 80 degrees Celsius
Single bus digital signal
3.3 to 5 volt DC
4.4Editor score
Teyleten Robot DHT11 Pack
20 to 95 percent RH
0 to 50 degrees Celsius
Digital temperature humidity module
3.3 to 5 volt DC
4.4Editor score
JTAREA DHT22 Sensor
0 to 100 percent RH
40 to 80 degrees Celsius
Compact mounting design holes
Single bus digital output
4.6Editor score
Teyleten DHT22 3 Pack
0 to 100 percent RH
40 to 80 degrees Celsius
Single bus digital signal
3.3 to 5.5 volt DC
3.9Editor score
10-Pack DHT11 Module
20 to 90 percent RH
0 to 50 degrees Celsius
Wide voltage compatibility range
Bypass capacitor included onboard
4.6Editor score
4Pcs DHT22 Module
0 to 100 percent RH
40 to 80 degrees Celsius
Anti interference signal output
Compact user friendly design
4.0Editor score
2pcs AHT30 High Precision
0 to 100 percent RH
40 to 85 degrees Celsius
I2C master output type
Low power consumption voltage
5.0Editor score
1. HiLetgo 5pcs DHT11 – Best Budget Option
HiLetgo 5pcs DHT11
Humidity range 20 to 90
Temperature range 0 to 50
Single wire digital communication
Voltage 3.3 to 5V
This module offers an excellent entry point for hobbyists needing basic environmental data. It comes with five sensors, making it ideal for classrooms or multiple prototypes. The digital output simplifies wiring significantly.
Pros
- Very affordable price point
- Easy single wire integration
- Includes five modules for bulk use
- Simple to program for beginners
Cons
- Limited accuracy compared to I2C
- Restricted temperature range
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The DHT11 sensor is pre calibrated and features a bypass capacitor on board. This ensures stable readings without extra components. The single wire protocol reduces the number of GPIO pins required on your Arduino.
While the accuracy is lower than premium options, it is sufficient for general monitoring tasks. The temperature range is limited to 50 degrees Celsius, which may not suit industrial applications. However, for indoor use, it performs reliably.
This pack is recommended for students or makers starting with home automation. It provides a cost effective way to experiment with temperature and humidity monitoring without a large initial investment.
Simplified Circuit Integration
The single wire design means you only need one digital pin to read data. This frees up resources for other sensors or actuators in your project.
Value for Bulk Projects
Receiving five modules allows you to distribute sensors across different rooms or test multiple designs simultaneously. This bulk approach reduces per unit costs significantly.
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2. 2pcs DHT11 – Reliable Entry Level Module
2pcs DHT11
Humidity range 20 to 95
Temperature range 0 to 50
Resistive humidity element
3.3 to 5V operation
This two pack provides a solid foundation for basic monitoring needs. The sensor uses a resistive element for humidity and an NTC device for temperature. It is designed for high reliability in standard conditions.
Pros
- Compatible with Arduino and Pi
- Stable long term performance
- Simple digital output protocol
- Includes connecting wires
Cons
- Lower precision than advanced sensors
- Slower sampling rate
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The communication protocol is straightforward, requiring minimal programming effort. This makes it accessible for users who are new to embedded systems. The included wires streamline the connection process immediately.
Accuracy is adequate for general indoor environments but may vary slightly in extreme conditions. The slower update rate means it is not ideal for rapid change detection. However, for steady monitoring, it works well.
Consider this option for small scale projects where cost and simplicity matter. It is a dependable choice for learning the basics of sensor interfacing with microcontrollers.
Dual Microcontroller Support
The module is explicitly listed as compatible with both Arduino and Raspberry Pi boards. This versatility allows you to use the same hardware across different development platforms.
Stable Performance
Designed with excellent long term stability, the sensor maintains consistent readings over time. This reduces the need for frequent recalibration during extended deployments.
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3. Teyleten Robot SHT31 – High Precision I2C Sensor
Teyleten Robot SHT31
Humidity accuracy plus minus 2 percent
Temperature accuracy plus minus 0.3
I2C interface output
Wide voltage 2.4 to 5.5V
The SHT31 delivers exceptional precision, making it ideal for scientific or industrial projects. Its I2C interface allows for efficient communication with microcontrollers. The accuracy levels are significantly better than standard digital sensors.
Pros
- Superior accuracy for critical applications
- Wide operating voltage range
- Full 0 to 100 percent RH
- Three pack for redundancy
Cons
- Higher price than DHT series
- Requires I2C protocol knowledge
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With a wide voltage range from 2.4 to 5.5 volts, it adapts easily to various power supplies. The temperature range extends from 40 to 125 degrees Celsius, covering extreme environments. This flexibility is a major advantage.
The cost is higher, but the performance justifies the investment for demanding tasks. You might need to understand I2C addressing, which adds slight complexity. However, libraries make this easy to manage.
This sensor is the top choice for applications where data integrity is paramount. Use it for professional weather stations or precision climate control systems requiring reliable measurements.
Exceptional Accuracy
Achieving plus minus 0.3 degrees Celsius accuracy ensures that your temperature data is trustworthy. This level of precision is rare in this price bracket.
Full Humidity Coverage
Measuring from 0 to 100 percent RH allows you to monitor both dry and saturated air conditions accurately. This is essential for comprehensive environmental control.
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4. HiLetgo 2pcs DHT22 – Enhanced Performance Sensor
HiLetgo 2pcs DHT22
Humidity accuracy plus minus 2 percent
Temperature accuracy plus minus 0.5
Range 40 to 80 degrees
Screw hole mounting
The DHT22 is a step up from the DHT11, offering improved accuracy and range. It supports full humidity coverage and a wider temperature spectrum. The screw holes make securing it to a panel simple.
Pros
- Higher precision than DHT11
- Broader temperature range
- Easy mechanical mounting
- Full 0 to 100 percent RH
Cons
- Slightly slower response time
- More expensive than basic units
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Accuracy is significantly better at plus minus 0.5 degrees Celsius. This makes it suitable for applications requiring closer tolerances than hobbyist grade modules. The bidirectional serial data ensures reliable communication.
While it costs more, the performance gains are clear. The mounting options reduce the need for external brackets. This saves time during assembly and improves project stability over time.
Use this for home automation projects where reliability is key. It strikes a balance between cost and performance that fits many intermediate level makers.
Improved Tolerance
The temperature accuracy is twice as good as the DHT11 model. This allows for finer control in systems like heating or cooling automation.
Secure Installation
Integrated screw holes provide a robust way to mount the sensor. This prevents movement and ensures consistent exposure to the environment.
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5. Teyleten Robot DHT11 Pack – Bulk Value Kit
Teyleten Robot DHT11 Pack
Humidity error plus minus 5 percent
Temperature error plus minus 2 degrees
Operating voltage 3.3 to 5V
Lightweight 8g each
This five pack provides an economical solution for large scale deployments. Each unit weighs only 8 grams, making it easy to transport or install in tight spaces. The voltage range is standard for most boards.
Pros
- Great value for money
- Standard humidity range support
- Very light weight
- Works with multiple controllers
Cons
- Basic accuracy limitations
- Standard single wire protocol
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The error margins are typical for entry level sensors. They are acceptable for monitoring trends rather than precise measurements. The compatibility with Arduino and Raspberry Pi ensures broad adoption.
You can deploy sensors in multiple locations without breaking the budget. This is useful for mapping humidity across a greenhouse or large room. The performance is consistent across the set.
This is a smart buy for extensive monitoring networks. If you need many data points and budget is a constraint, this set offers practical utility.
Lightweight Design
At just 8 grams per unit, the sensor adds minimal load to your project. This is beneficial for portable devices or battery operated units.
Multi Location Deployment
Having five sensors allows you to create a spatial map of humidity. This helps identify hot spots or areas with poor ventilation effectively.
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6. JTAREA DHT22 Sensor – Compact Reliable Module
JTAREA DHT22 Sensor
Compact size 28mm length
155mm connecting wire length
Humidity plus minus 2 percent
Temperature plus minus 0.5 degrees
This module is praised for its quick response and stability. The connecting wire is 155mm, giving you flexibility in placement. The compact size fits easily into most project enclosures.
Pros
- Highly rated by users
- Generous cable length
- Quick response times
- Easy mounting holes
Cons
- Limited to two units per pack
- Standard digital protocol
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The accuracy matches the standard DHT22 specifications. It is suitable for weather stations and humidity regulators. The screw holes allow for secure attachment to surfaces.
The 4.6 rating indicates high user satisfaction. This suggests reliability in real world conditions. The two pack is sufficient for paired setups or spare inventory.
Choose this for applications needing reliable and fast readings. The cable length is a specific advantage when the controller is not near the sensor.
Cable Flexibility
The 155mm wire allows you to place the sensor away from the main circuit board. This is useful when monitoring external environments.
Fast Response
Quick response times ensure that changes in the environment are captured promptly. This helps in maintaining tight control over climate settings.
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7. Teyleten DHT22 3 Pack – Medium Value Kit
Teyleten DHT22 3 Pack
Humidity range 0 to 100 percent
Temperature range 40 to 80 degrees
Single bus digital output
Wide voltage 3.3 to 5.5V
This pack offers three units for projects needing multiple sensors. It supports a wide voltage range for flexibility. The full humidity coverage ensures versatility in various applications.
Pros
- Full humidity coverage
- Wide voltage compatibility
- Three units included
- Standard interface
Cons
- Lower user rating than others
- Quality may vary
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The rating is slightly lower, suggesting some inconsistency in quality. However, many users find it reliable for standard tasks. The bidirectional port ensures efficient data transfer.
The value lies in having enough sensors for redundancy or distribution. It works well for educational purposes or general monitoring. The performance aligns with typical DHT22 standards.
Consider this if you need a moderate quantity at a reasonable price. It is a functional option for intermediate projects where exact brand consistency is less critical.
Voltage Flexibility
The 3.3 to 5.5V range means it can connect to different board types without extra regulation. This simplifies wiring in mixed systems.
Redundancy Support
Having three units allows you to have spares or backup sensors. This ensures continuity if one module fails unexpectedly.
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8. 10-Pack DHT11 Module – Large Scale Bulk Set
10-Pack DHT11 Module
Large quantity 10 modules
Onboard bypass capacitor
Long term stability
Simple single wire digital
This set provides ten modules, ideal for large workshops or classroom use. The stability is rated under plus minus 1 percent per year. The onboard capacitor reduces the need for external components.
Pros
- Highest quantity available
- High user satisfaction
- Built for durability
- Easy to integrate
Cons
- Basic sensor capabilities
- May be excess for small projects
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The 4.6 rating indicates high reliability among users. It supports 3.3 to 5.5 volts for wide compatibility. This makes it a robust choice for industrial or educational settings.
It is cost effective for building large networks of sensors. The simplicity ensures that everyone can use them regardless of skill level. The documentation is comprehensive for troubleshooting.
Select this for mass deployment where cost per unit matters most. It offers the best value for quantity while maintaining acceptable performance levels.
Large Quantity
Ten modules allow for extensive coverage across a building or multiple devices. This is essential for networked monitoring systems.
Onboard Components
The included bypass capacitor minimizes external circuitry requirements. This speeds up the prototyping and assembly process significantly.
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9. 4Pcs DHT22 Module – Solid Mid Range Pack
4Pcs DHT22 Module
Anti interference signal output
Humidity accuracy plus minus 2 percent
Compact 38mm length design
Bidirectional serial data
This four pack balances performance and quantity for typical DIY needs. The compact size fits well in tight enclosures. The anti interference design helps maintain signal integrity.
Pros
- Anti interference features
- Compact footprint
- Standard accuracy specs
- Four units included
Cons
- Average rating
- No standout premium features
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The accuracy matches the standard DHT22. It supports 0 to 100 percent RH for full range use. The bidirectional port ensures efficient communication with microcontrollers.
The rating is average, reflecting consistent but not exceptional performance. It is a safe choice for general automation tasks. The design is user friendly for quick setup.
Use this for standard home automation where you need more than a couple of units. It provides a reliable set without the cost of premium models.
Signal Integrity
The anti interference capabilities ensure stable readings even in noisy environments. This is beneficial for industrial areas with electromagnetic noise.
User Friendly
The compact and simple design makes it easy to integrate into various projects. This reduces setup time and effort.
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10. 2pcs AHT30 High Precision – Advanced I2C Solution
2pcs AHT30 High Precision
0.01 degree temperature resolution
0.024 percent humidity resolution
I2C master output
Low power consumption
The AHT30 delivers exceptional resolution and precision for demanding tasks. With 0.01 degree temperature resolution, it captures minute changes. The I2C output allows for efficient parallel data reading.
Pros
- Perfect user rating
- High resolution readings
- Low power design
- Multiple I2C device support
Cons
- Only two units included
- Higher complexity than DHT
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It supports low power consumption, making it ideal for battery projects. The voltage range is wide, adapting to various systems easily. This is a strong upgrade from traditional digital sensors.
The perfect rating suggests high reliability and performance. While only two units are included, the quality is exceptional. The setup requires understanding I2C protocols but is straightforward with libraries.
This is the top pick for high precision requirements. Use it when you need detailed data for climate control or scientific logging.
High Resolution
Capturing changes as small as 0.01 degrees provides detailed insights. This is vital for precise environmental control systems.
Low Power
The efficient design extends battery life in portable applications. This reduces maintenance frequency in remote monitoring setups.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right sensor requires balancing accuracy, cost, and compatibility. Consider these factors to ensure your choice meets your project goals.
Accuracy Requirements
If your project demands precise data, look for sensors like the SHT31 or AHT30 which offer plus minus 0.3 degrees Celsius accuracy. Standard DHT sensors have lower tolerances which may suffice for general monitoring.
Prioritize high accuracy models for scientific or industrial use where small variations matter significantly.
Voltage Compatibility
Check if your board uses 3.3V or 5V logic. Most modules support a range, but some like the SHT31 handle wider inputs which simplifies wiring in mixed systems.
Ensure the sensor voltage matches your Arduino to avoid damage or unstable readings.
Measurement Range
Some sensors only cover 20 to 95 percent humidity, while others go from 0 to 100 percent. Similarly, temperature ranges vary from 0 to 50 degrees to much broader limits.
Select a sensor that covers the full range of conditions expected in your environment.
Communication Protocol
Digital single wire protocols are easy to use but slower. I2C offers faster communication and supports multiple devices on two pins but requires more setup.
Choose I2C for complex projects and single wire for simple prototypes.
Physical Design
Some modules include screw holes for secure mounting while others are bare boards. Cable length can also vary affecting where you can place the sensor relative to your controller.
Look for mounting options that fit your enclosure or mounting plan.
Packaging Quantity
Packs often include multiple units which is useful for bulk projects. This reduces per unit costs and provides spares for testing or future expansion.
Buy multi packs if you need several sensors or want to avoid single unit price premiums.
Budget Constraints
Entry level DHT sensors are the most affordable while I2C models cost more. Balance the cost against the precision needed for your specific application.
Allocate budget for higher quality sensors only if the project demands that level of reliability.
Documentation and Support
Some products offer detailed guides and customer support for troubleshooting. This can be critical for beginners facing integration issues.
Check for available resources before purchasing to ensure smooth setup.
How to Use and Care for Your Arduino Humidity Sensor
Connect the sensor pins to the correct voltage and digital or I2C pins on your board. Verify the wiring against the module diagram to prevent short circuits. Ensure the power supply is stable and within the specified range.
Install the code library corresponding to your specific sensor model. Upload the example sketch to verify data output. Calibrate the sensor if possible by comparing readings with a reference device.
Keep the sensor away from direct sunlight or water sources to maintain accuracy. Periodically check the connections for corrosion if used in humid environments. Replace the sensor if readings drift significantly over time.
Frequently Asked Questions
What is the difference between DHT11 and DHT22?
The DHT22 has better accuracy and a wider temperature range than the DHT11. DHT11 is cheaper and simpler but DHT22 is preferred for more precise projects. Both use similar single wire communication protocols.
Do these sensors need external pull-up resistors?
Many modules come with onboard resistors so you do not need to add them. However, if you connect bare sensors directly you may need to include a pull-up resistor on the data line for stability.
How long do Arduino humidity sensors last?
Most sensors maintain accuracy for several years if used correctly. Long term stability is often rated for small drift per year. Proper ventilation and avoiding extreme conditions extend their life.
Can I connect multiple sensors to one Arduino?
Yes you can connect multiple sensors using different digital pins or I2C addresses. For digital sensors use one pin per sensor. For I2C you can daisy chain them with unique addresses.
Why are my readings unstable?
Unstable readings often come from power issues or bad wiring. Ensure your power source is steady and connections are secure. Add a small capacitor across power pins to filter noise if needed.
Which sensor is best for outdoor use?
Outdoor use requires a sensor with a wide temperature range and protection. Models like the DHT22 or SHT31 work well but you should add a weatherproof enclosure to protect the electronics.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
The ten options reviewed provide a range of choices for different project needs. Whether you need budget friendly basic units or high precision I2C models there is a suitable pick here.
Prioritize accuracy and communication type based on your specific goals. If you require exact measurements invest in the SHT31 or AHT30 for their superior performance.
Remember to verify current pricing and availability before purchasing. Products may change over time so checking recent reviews ensures you get the latest quality.