HiLetgo 5pcs DHT11
4.5Editor score
Affordable bulk pack
Simple wiring
Wide voltage range
In this guide
Finding the right Arduino humidity sensor is essential for reliable environmental monitoring in DIY electronics and home automation projects.
We evaluated ten popular digital and I2C modules based on accuracy, voltage range, connection type, and compatibility with common microcontroller boards.
Each pick shows key specs and strengths so you can match the sensor to your needs. Prices change frequently, so verify current listings before purchasing.
Top 3 Picks for Best Arduino Humidity Sensor
Teyleten Robot SHT31-D
4.7Editor score
Wide temperature range
High accuracy output
I2C interface
2pcs AHT30
5.0Editor score
High precision
Low power
Digital I2C
Top 10 Best Arduino Humidity Sensor in 2026 Compared
This side-by-side comparison lists all ten products with their key specifications to help you quickly find the sensor that matches your project requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo 5pcs DHT11
Range 20-90% RH
Voltage 3.3-5.5V
Digital single-wire
Temp 0-50C
4.5Editor score
Editor's Choice
2pcs DHT11
Range 20-95% RH
Voltage 3.3-5V
Digital output
Temp 0-50C
4.3Editor score
Editor's Choice
Teyleten SHT31-D
Range 0-100% RH
Voltage 2.4-5.5V
I2C interface
Temp -40-125C
4.7Editor score
HiLetgo DHT22
Range 0-100% RH
Voltage 3.3-5V
Single-bus digital
Temp -40-80C
4.4Editor score
Teyleten DHT11
Range 20-95% RH
Voltage 3.3-5V
Digital output
Temp 0-50C
4.4Editor score
JTAREA DHT22
Range 0-100% RH
Voltage 3.3-5.5V
Single-bus output
Temp -40-80C
4.6Editor score
Teyleten DHT22
Range 0-100% RH
Voltage 3.3-5.5V
Serial data bidir
Temp -40-80C
3.9Editor score
10-Pack DHT11
Range 20-90% RH
Voltage 3.3-5.5V
10-pack kit
Temp 0-50C
4.6Editor score
4Pcs DHT22
Range 0-100% RH
Voltage 3-5.5V
Digital signal
Temp -40-80C
4.0Editor score
2pcs AHT30
Range 0-100% RH
Voltage 2.0-5.5V
I2C master
Temp -40-85C
5.0Editor score
1. Teyleten Robot SHT31-D – Best Overall Sensor
Teyleten Robot SHT31-D
Humidity 0-100%
Temperature -40-125C
Accuracy 2% RH
I2C Interface
The Teyleten Robot SHT31-D leads our list with exceptional accuracy and a wide operating range suitable for demanding environments.
Pros
- Wide temperature range
- High humidity accuracy
- Stable digital output
- Broad voltage support
- Easy I2C integration
Cons
- Slightly higher cost
- Requires I2C pins
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It delivers precise humidity and temperature readings with minimal drift and works reliably across many voltage levels for Arduino boards.
While it costs more than basic DHT modules and needs I2C pins, the improved accuracy and range are worth the investment for serious projects.
Choose this module if you need stable, high-precision data for weather stations or industrial monitoring applications.
Wide Range Operation
The module supports temperatures from -40 to 125 degrees Celsius, making it suitable for both indoor and outdoor use.
Digital I2C Communication
Using I2C reduces wiring complexity and allows multiple sensors to share the same bus without conflicts.
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2. HiLetgo 5pcs DHT11 – Best Value Pack
HiLetgo 5pcs DHT11
Humidity 20-90%
Temperature 0-50C
Voltage 3.3-5.5V
Single-wire output
The HiLetgo 5pcs DHT11 provides an affordable entry point for beginners with five modules and cables included in the package.
Pros
- Affordable five-pack
- Simple single-wire interface
- Onboard pull-up resistor
- Wide voltage range
- Includes wires
Cons
- Limited humidity range
- Lower accuracy than premium
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It uses a simple single-wire protocol and operates over a wide voltage range for easy connection to most microcontrollers.
While its accuracy and range are modest, it is perfectly adequate for basic hobby projects and classroom experiments.
Select this pack when budget is a priority and you need multiple units for testing or group activities.
Plug-and-Play Setup
Onboard components like bypass capacitors and pull-up resistors reduce external wiring needs and simplify connections.
Bulk Value
Getting five sensors in one box makes it ideal for projects requiring multiple measurement points.
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3. 2pcs AHT30 – Premium Precision
2pcs AHT30
Humidity 0-100%
Temperature -40-85C
Accuracy 2% RH
I2C Master
The 2pcs AHT30 delivers high precision with digital I2C communication that supports multiple devices on one bus.
Pros
- Highest rated accuracy
- Low power consumption
- I2C communication
- High resolution output
- Wide voltage range
Cons
- Requires I2C pins
- Slightly complex setup
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It offers excellent stability and low power use along with a wide voltage range suitable for battery-powered systems.
Although setup requires I2C pins and proper address handling, the performance and resolution are top notch for critical applications.
Choose this module if you require accurate, reliable measurements for professional or long-term monitoring projects.
High Resolution
The module provides fine-grained data resolution for temperature and humidity that supports detailed environmental analysis.
Multi-Device Support
I2C allows several sensors to share pins so you can scale up your monitoring setup easily.
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4. 2pcs DHT11 – Solid Entry-Level
2pcs DHT11
Humidity 20-95%
Temperature 0-50C
Voltage 3.3-5V
Digital output
The 2pcs DHT11 kit offers a simple way to add humidity sensing to small projects with minimal wiring and effort.
Pros
- Low cost
- Easy wiring
- Stable long-term
- Simple protocol
- Cables included
Cons
- Limited accuracy
- Single-wire timing sensitive
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It combines resistive and NTC elements with a microcontroller to ensure stable outputs and easy integration into Arduino code.
While accuracy is limited, the sensor delivers consistent results suitable for general indoor monitoring tasks.
Pick this set if you need a few cheap sensors for quick prototypes or basic environmental tracking.
Integrated Microcontroller
Built-in processing simplifies signal handling and reduces the load on your main controller.
Easy Integration
The single-wire scheme and included cables make it straightforward to connect and test.
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5. HiLetgo DHT22 – Improved Accuracy
HiLetgo DHT22
Humidity 0-100%
Temperature -40-80C
Accuracy 2% RH
Single-bus digital
The HiLetgo DHT22 improves on the DHT11 with a full 0 to 100 percent humidity range and a wider temperature range.
Pros
- Full humidity range
- Wider temp range
- Higher accuracy
- Mounting holes
- Stable performance
Cons
- More expensive than DHT11
- Requires timing delays
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It delivers tighter accuracy and responds quickly to environmental changes while supporting standard Arduino libraries.
While it costs slightly more than DHT11, the enhanced performance makes it a better fit for precise monitoring.
Use this module when you need broader ranges and better resolution without moving to an I2C sensor.
Full Humidity Span
Measuring from 0 to 100 percent relative humidity enables use in very dry or humid environments.
Mounting Options
Screw holes on the module make secure physical installation in enclosures simpler.
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6. Teyleten DHT11 – Reliable Five-Pack
Teyleten DHT11
Humidity 20-95%
Temperature 0-50C
Voltage 3.3-5V
Digital output
The Teyleten DHT11 offers five compact modules that are light and easy to wire into most hobby projects.
Pros
- Five units included
- Low weight
- Easy wiring
- Stable readings
- Broad voltage range
Cons
- Standard accuracy
- Limited temp range
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It maintains stable outputs and works over a wide voltage range so it fits many different board power systems.
Accuracy matches standard DHT11 specs but the bulk pricing and included connectors make it a strong choice.
Choose this kit if you need multiple sensors for distributed measurements or classroom use.
Compact and Light
Each module weighs around eight grams which keeps overall project weight low.
Broad Voltage Fit
Supporting 3.3 to 5 volts ensures compatibility with most microcontrollers without regulators.
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7. JTAREA DHT22 – Durable Design
JTAREA DHT22
Humidity 0-100%
Temperature -40-80C
Accuracy 2% RH
Compact size
The JTAREA DHT22 provides reliable monitoring with a compact design and convenient mounting options for enclosures.
Pros
- Stable performance
- Quick response
- Compact build
- Mounting holes
- Includes cables
Cons
- Standard DHT22 limits
- Not I2C
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It offers quick response times and stable outputs suitable for control loops and weather station projects.
While it shares standard DHT22 specifications the build quality and included cables add value.
Pick this sensor for general purpose use where moderate precision and sturdy construction are desired.
Quick Response
Fast reaction to environmental changes helps maintain responsive control systems.
Secure Mounting
Screw holes and compact size simplify physical installation in small housings.
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8. Teyleten DHT22 – Balanced Trio
Teyleten DHT22
Humidity 0-100%
Temperature -40-80C
Voltage 3.3-5.5V
Single-bus output
The Teyleten DHT22 pack provides three modules that cover wide ranges and support bidirectional serial data transfer.
Pros
- Three modules
- Full humidity span
- Wider temp range
- Bidirectional data
- Simple wiring
Cons
- Lower customer rating
- Standard accuracy
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It operates across a broad voltage range and delivers stable outputs for typical home automation use cases.
While customer ratings are lower the specs remain consistent with other DHT22 modules and the bulk pricing is competitive.
Use this kit when you need multiple units for comparative testing or redundant sensing points.
Bidirectional Data
The single-bus protocol supports bidirectional communication that simplifies controller interactions.
Voltage Flexibility
Supporting 3.3 to 5.5 volts allows direct use with varied microcontroller systems.
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9. 10-Pack DHT11 – Bulk Value
10-Pack DHT11
Humidity 20-90%
Temperature 0-50C
Ten-pack value
Stable long-term
The 10-pack DHT11 kit supplies a large quantity of sensors ideal for classrooms, workshops, or extensive projects.
Pros
- Large quantity
- Low cost per unit
- Includes cables
- Stable readings
- Wide voltage
Cons
- Basic accuracy
- Limited humidity range
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It includes cables and supports a wide voltage range to simplify integration across various boards and power supplies.
While accuracy and range are basic, the quantity and stability make it useful for large-scale deployments.
Select this pack when you need many sensors for simultaneous measurements or replacement stock.
Large Quantity
Ten units allow many measurement points or spare parts for long-term maintenance.
Long-term Stability
Stability ratings indicate consistent performance over time for extended use.
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10. 4Pcs DHT22 – Compact Four-Pack
4Pcs DHT22
Humidity 0-100%
Temperature -40-80C
Accuracy 2% RH
Compact design
The 4Pcs DHT22 module offers accurate readings with a compact and lightweight design for tight spaces.
Pros
- Full humidity range
- Wider temp range
- Accurate readings
- Lightweight
- Simple wiring
Cons
- Basic protocol
- Timing requirements
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It provides full humidity and extended temperature ranges along with simple single-bus wiring to reduce assembly time.
While the basic timing protocol requires attention, the performance and form factor make it a practical choice.
Choose this kit if you need several sensors for small enclosures or portable devices.
Lightweight Design
The low mass around 6.4 grams suits projects where weight is a constraint.
Full Range Coverage
Coverage from zero to one hundred percent humidity supports diverse environmental conditions.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right sensor depends on required accuracy, range, communication type, and budget constraints.
Accuracy and Precision
Accuracy defines how close the reading is to the actual humidity level while precision defines how consistent repeated readings are.
Look for sensors that state clear accuracy tolerances such as +/- 2% RH and ensure they suit your application needs.
Humidity and Temperature Range
Different modules cover different spans and some support only 20 to 95 percent humidity while others go from zero to one hundred percent.
If you need full range or extreme temperatures choose models like the SHT31 or DHT22 to avoid clipping.
Communication Interface
Single-wire digital sensors require minimal pins but rely on tight timing while I2C modules reduce timing risks and support multiple devices.
Decide between digital bus and I2C based on available pins and wiring complexity you can manage.
Voltage Requirements
Ensure your sensor supports your board voltage which commonly ranges from 3.3 to 5 volts for most Arduino devices.
Sensors that accept 2.4 to 5.5 volts offer the most flexibility across different power systems.
Response Time and Stability
Quick response helps control loops react to changes and stability ensures drift is minimal over months of operation.
Check technical descriptions for response times and long-term stability ratings before purchasing.
Pack Quantity and Pricing
Buying in packs reduces cost per unit and provides spares for testing and replacement.
Compare total package value rather than price for a single module to get the best budget decision.
Mounting and Form Factor
Some modules include screw holes or compact shapes that simplify enclosure design and physical integration.
Select dimensions that fit your housing and allow secure attachment to avoid vibration issues.
Documentation and Support
Clear datasheets and library examples speed up development and reduce debugging time for new users.
Choose products that offer accessible resources and customer support channels for troubleshooting.
How to Use and Care for Your Arduino Humidity Sensor
Connect power and ground pins correctly and use a pull-up resistor if required by the protocol.
Include a small delay after reading to allow stable measurements and avoid timing conflicts.
Keep the sensor away from direct heat sources and moisture that could condense on the element.
Frequently Asked Questions
Which sensor is best for beginners?
The DHT11 is widely recommended for beginners due to its low cost and simple wiring. It works well for basic indoor projects and has extensive library support on Arduino platforms.
Do I need a pull-up resistor?
Many modules include an onboard pull-up resistor which simplifies wiring. If your module does not specify one add a 4.7k or 10k resistor to the data line.
How often should I calibrate the sensor?
Digital sensors are typically pre-calibrated and do not require frequent calibration. Check manufacturer guidelines for drift tolerance and recalibrate if accuracy degrades over time.
Can I use multiple sensors on one board?
Yes, I2C sensors support multiple devices on the same bus. Single-wire sensors require separate digital pins or careful software timing for each device.
Why are my readings unstable?
Instability often comes from power noise or fast sampling. Use stable power, allow a delay after read, and check wiring for loose connections.
What is the difference between DHT11 and DHT22?
DHT22 supports a wider humidity and temperature range with better accuracy than DHT11. DHT22 also has a larger footprint and higher cost per unit.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
Our top three picks balance accuracy, range, and value for most Arduino users with I2C and digital options.
Prioritize full range and precision for professional work and opt for DHT11 kits when simplicity and cost are primary goals.
Always check current listings for the latest pricing and ensure the sensor matches your system voltage and pins.