HiLetgo 5pcs DHT11
4.5Editor score
Single wire digital signal output
Includes five modules and cables
Operates on 3.3V to 5V
In this guide
Choosing the right humidity sensor for your Arduino project can be challenging with so many options available. You need a device that offers reliable readings, easy integration, and stable performance over time for your specific application needs.
We evaluated ten top-rated modules based on accuracy, voltage compatibility, interface type, and user feedback. This list covers everything from basic budget-friendly options to high-precision industrial-grade sensors for various environments.
Each pick highlights key features and real-world performance to help you decide quickly. Remember that prices and availability change frequently, so check current listings before making your final purchase decision for your build.
Top 3 Picks for Best Arduino Humidity Sensor
Teyleten Robot SHT31-D
4.7Editor score
Wide voltage 2.4V to 5.5V
I2C interface for easy wiring
Humidity accuracy within 2 percent
2pcs AHT30 High Precision
5.0Editor score
Temperature accuracy to 0.3 degrees
Supports simultaneous I2C device access
Low power consumption design
Top 10 Best Arduino Humidity Sensor in 2026 Compared
The following table provides a side-by-side comparison of all ten selected humidity sensors to help you quickly identify the best fit for your voltage requirements and precision needs.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo 5pcs DHT11
Voltage 3.3V to 5.5V
Humidity range 20 to 95 percent
Digital single bus output
Accuracy 5 percent humidity
4.5Editor score
Editor's Choice
2pcs DHT11 Module
Voltage 3.3V to 5V
Humidity range 20 to 95 percent
Single wire wiring scheme
Accuracy 2 degrees temperature
4.3Editor score
Editor's Choice
Teyleten Robot SHT31-D
Voltage 2.4V to 5.5V
Humidity range 0 to 100 percent
I2C interface output
Accuracy 0.3 degrees temperature
4.7Editor score
HiLetgo 2pcs DHT22
Temperature range 40 to 80C
Humidity range 0 to 100 percent
Single bus digital signal
Accuracy 0.5 degrees temperature
4.4Editor score
Teyleten Robot DHT11
Voltage 3.3V to 5V
Humidity range 20 to 95 percent
Digital output interface
Accuracy 2 degrees temperature
4.4Editor score
DHT22 AM2302 Module
Temperature range 40 to 80C
Humidity range 0 to 100 percent
Quick response times
Accuracy 0.5 degrees temperature
4.6Editor score
Teyleten Robot DHT22
Voltage 3.3V to 5.5V
Humidity range 0 to 100 percent
Single bus digital signal
Accuracy 2 percent humidity
3.9Editor score
10-Pack DHT11 Module
Voltage 3.3V to 5.5V
Humidity range 20 to 90 percent
Onboard pull-up resistor
Accuracy 1 percent humidity drift
4.6Editor score
4Pcs DHT22 Module
Temperature range 40 to 80C
Humidity range 0 to 100 percent
High quality components
Accuracy 0.5 degrees temperature
4.0Editor score
2pcs AHT30 High Precision
Voltage 2.0V to 5.5V
Temperature range 40 to 85C
I2C communication protocol
Resolution 0.01 degrees temperature
5.0Editor score
1. Teyleten Robot SHT31-D – Best Precision Digital Sensor
Teyleten Robot SHT31-D
Humidity accuracy within 2 percent
Temperature accuracy 0.3 degrees
Voltage range 2.4 to 5.5V
I2C interface for Arduino
The Teyleten Robot SHT31-D stands out as a top choice for projects requiring precise environmental monitoring. It boasts an impressive humidity accuracy of plus or minus 2 percent RH and temperature accuracy of 0.3 degrees Celsius. This module operates on a wide voltage range from 2.4V to 5.5V making it versatile for various setups.
Pros
- Excellent measurement accuracy
- Wide operating voltage range
- Standard I2C easy wiring
- High reliability long-term
Cons
- Slightly higher cost than DHT
- Requires I2C knowledge basics
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Its I2C interface simplifies wiring significantly compared to single-wire sensors allowing you to connect multiple devices easily. The sensor covers a humidity range of 0 to 100 percent RH and temperatures from -40 to 125 degrees Celsius. Such broad ranges make it suitable for both indoor home automation and outdoor weather stations.
While the cost is higher than basic DHT modules the improved precision justifies the expense for critical applications. The digital output ensures stable readings with minimal noise interference. If you need reliable data for scientific or industrial prototypes this module delivers consistent performance over time.
This sensor is ideal for hobbyists and professionals who prioritize accuracy over budget constraints. It works seamlessly with Arduino IDE and supports libraries that streamline data reading. For anyone building a weather station or climate control system this module is a strong recommendation.
Superior Accuracy for Critical Data
The high precision of this module ensures that your recorded data reflects true environmental conditions. This is essential for applications where small deviations can impact outcomes like agriculture or health monitoring.
Versatile Voltage Compatibility
Operating between 2.4V and 5.5V allows connection to battery-powered devices without voltage regulators. This flexibility simplifies circuit design and reduces component count for portable projects.
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2. HiLetgo DHT11 – Best Value Pack
HiLetgo 5pcs DHT11
Voltage 3.3V to 5.5V
Humidity range 20 to 90 percent
Single wire digital bus
Accuracy 5 percent humidity
The HiLetgo 5pcs DHT11 module offers incredible value for beginners starting with Arduino projects. Each package includes five complete sensor modules with wires ready for immediate use. This bulk set is perfect for classrooms or multiple prototyping needs. It operates between 3.3V and 5V with onboard components to simplify connections.
Pros
- Five modules included
- Affordable price point
- Simple single wire setup
- Onboard bypass capacitor
Cons
- Limited humidity range
- Lower accuracy than advanced models
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Its single-wire digital output minimizes wiring complexity making it ideal for simple setups. The module measures humidity from 20 to 90 percent and temperatures from 0 to 50 degrees Celsius. This range covers most indoor environments. The onboard capacitor reduces noise improving signal stability for microcontroller reading.
While the accuracy is around 5 percent humidity it is sufficient for general monitoring tasks. If you need precise data for sensitive processes consider higher-end models instead. For basic home automation or school projects the cost effectiveness makes this an excellent starting point.
This pack is recommended for students or hobbyists who need multiple units for testing. The pre-attached cables save time on assembly and reduce errors. Overall it provides a reliable entry point into digital sensing without breaking the budget.
Complete Kit for Beginners
Having five modules and cables in one box allows you to test different locations simultaneously. This convenience speeds up learning curves and facilitates comparison between sensor units effectively.
Onboard Circuitry Simplifies Wiring
The inclusion of a pull-up resistor and bypass capacitor means fewer external components are needed. This reduces clutter on your breadboard and lowers the chance of connection errors.
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3. AHT30 High Precision – Best Advanced Module
2pcs AHT30 High Precision
Voltage 2.0V to 5.5V
Humidity accuracy 2 percent
Temperature accuracy 0.3 degrees
I2C communication support
The AHT30 High Precision module achieves a perfect rating due to its exceptional performance and reliability. It uses I2C communication to support simultaneous access to multiple devices which is great for complex projects. The voltage range spans 2.0V to 5V allowing easy adaptation to different power sources.
Pros
- Highest rated product
- Very fast transmission speed
- Supports multiple I2C devices
- Wide voltage range
Cons
- Requires four test lines
- Less common than DHT
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Its temperature accuracy reaches 0.3 degrees with a resolution of 0.01 degrees. Humidity accuracy is within 2 percent at 25 degrees Celsius. The module features stable and fast transmission speed ensuring real-time data updates. This makes it suitable for dynamic environments where conditions change rapidly.
The four-pin test line connection is convenient though slightly more complex than single-wire options. However the benefits of higher precision and faster data transfer outweigh this minor inconvenience. It is an upgraded version of previous models ensuring better stability and accuracy.
Ideal for professional use or advanced DIY projects this module delivers top-tier results. Its compatibility with Arduino and other microcontrollers makes it versatile. For those demanding high fidelity readings the AHT30 is the premium choice to consider.
Multi-Device I2C Support
The ability to connect multiple sensors on the same bus reduces pin usage on your microcontroller. This scalability is vital for systems requiring simultaneous data from various sources.
Fine Resolution for Detailed Monitoring
A temperature resolution of 0.01 degrees allows detection of minute changes often missed by standard sensors. This granularity supports advanced algorithm development for climate control systems.
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4. DHT11 Module – Simple and Effective
2pcs DHT11 Module
Humidity range 20 to 95 percent
Temperature range 0 to 50C
Single wire scheme
Digital output
This 2pcs DHT11 module provides a straightforward solution for basic environmental sensing. It features a digital signal output with calibrated sensor technology to ensure reliability. The module uses a dedicated digital acquisition technique for high reliability. It connects easily to Arduino and Raspberry Pi systems.
Pros
- Compact design
- Easy single wire wiring
- Wide compatibility
- Stable long-term
Cons
- Two pieces only
- Limited temperature range
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The single-wire wiring scheme reduces clutter and simplifies integration into other applications. Humidity ranges from 20 to 95 percent while temperature covers 0 to 50 degrees Celsius. This scope fits most indoor uses. The simple protocol reduces programming effort significantly for beginners.
Accuracy remains consistent with plus or minus 5 percent humidity error and 2 degrees temperature error. While not industrial grade it is sufficient for home automation and hobby projects. The package includes two units with wires ready to plug in.
This is a great option for those needing spare sensors for backups. The compact size fits well in tight enclosures. For standard monitoring tasks this module offers a balance of cost and performance that many find satisfactory.
Calibrated Digital Output
The built-in calibration ensures the sensor provides digital signals directly without complex conversion. This simplifies code and reduces processing load on your microcontroller.
Wide Platform Compatibility
It works with popular boards like Raspberry Pi and Arduino making it a versatile choice. You can reuse code across different platforms without major modifications.
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5. DHT22/AM2302 – Best All Rounder
HiLetgo 2pcs DHT22
Temperature range -40 to 80C
Humidity range 0 to 100 percent
Accuracy 0.5 degrees
Single bus signal
The HiLetgo 2pcs DHT22 module replaces older models like SHT11 with improved specifications. It features the AOSONG AM2302 chip for high sensitivity. The digital output is bidirectional allowing flexible communication. It comes with fixing screw holes for secure installation.
Pros
- Better accuracy than DHT11
- Wider temperature range
- Includes mounting holes
- Compatible with libraries
Cons
- Slightly larger than DHT11
- Requires more current
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Temperature accuracy is rated at 0.5 degrees which is notably better than standard DHT11. Humidity accuracy is within 2 percent across a 0 to 100 percent range. This makes it suitable for broader applications including greenhouses and outdoor weather stations.
The bidirectional serial data allows efficient processing and reading of environmental data. It operates on 3.3V to 5V making it compatible with most boards. The compact design with screw holes simplifies mounting in permanent fixtures.
If you need better precision without moving to expensive industrial sensors this is a logical choice. It is widely supported by Arduino libraries making software integration straightforward. For DIY practice or serious hobby projects this module offers a solid upgrade path.
Improved Sensitivity for Better Data
The AM2302 chip provides higher sensitivity allowing detection of smaller environmental changes. This leads to more responsive automation systems and detailed data logging.
Physical Mounting Options
The inclusion of screw holes allows permanent installation without needing extra brackets. This stability is crucial for fixed monitoring points like wall-mounted controllers.
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6. Teyleten DHT11 – Reliable Bulk Pack
Teyleten Robot DHT11
Humidity range 20 to 95 percent
Temperature range 0 to 50C
Voltage 3.3V to 5V
8g each weight
This Teyleten Robot pack offers five DHT11 modules for extensive project needs. Each unit weighs about 8 grams making them lightweight for mobile apps. They operate on standard 3.3V to 5V power supplies. The digital output simplifies code writing significantly.
Pros
- Five units included
- Good stability
- Lightweight design
- Digital output
Cons
- Standard DHT11 accuracy
- Limited voltage range
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Humidity measurement covers 20 to 95 percent with an error margin of plus or minus 5 percent. Temperature accuracy is around 2 degrees for 0 to 50 degrees range. This setup is ideal for basic indoor monitoring where extreme precision is not required.
The modules are fully interchangeable allowing easy replacement if needed. Their stability ensures consistent performance over time for continuous monitoring. Using multiple sensors helps you monitor different zones in a single home or building.
For bulk purchases in workshops or schools this set provides excellent value. The simple interface reduces wiring time which accelerates prototyping. It is a dependable choice for standard environmental logging tasks.
Lightweight for Portable Builds
Weighing only 8 grams each these sensors add minimal weight to portable devices. This is beneficial for battery-operated sensors drones or moving robots.
High Stability Over Time
Long term stability ensures readings remain consistent without frequent calibration. This reliability saves maintenance effort and ensures data integrity over weeks or months.
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7. DHT22 AM2302 – Quick Response
DHT22 AM2302 Module
Temperature range -40 to 80C
Humidity range 0 to 100 percent
Quick response times
215mm connecting wire
This JTAREA DHT22 module is designed for stable performance with quick response times. It features a 215mm connecting wire which offers flexibility in placement. The module includes screw holes for easy mounting in tight spots. It operates reliably for automatic control and home appliances.
Pros
- Fast response times
- Long connecting wire
- Screw holes included
- High performance
Cons
- Requires 3.3V to 5.5V
- Single bus only
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Temperature accuracy is within 0.5 degrees across a wide range of -40 to 80 degrees Celsius. Humidity accuracy remains at 2 percent across a full 0 to 100 percent span. This makes it versatile for both cold and warm environments. The digital output ensures clean signals.
The quick response allows the system to react promptly to changes in environment. This is critical for climate control systems where speed matters. The compact size helps in fitting it into standard electronic enclosures easily.
Ideal for weather stations and humidity regulators this module is a robust choice. The long wire reduces the need for extension cables. It provides a reliable balance of speed and precision for practical DIY electronics.
Long Connecting Wire Flexibility
The 215mm wire allows placement away from the main controller without extra cables. This reduces heat interference and improves reading accuracy in sensitive spots.
Quick Response for Automation
Fast reaction to environmental shifts enables real-time adjustments for fans or heaters. This responsiveness is key for maintaining precise climate conditions consistently.
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8. Teyleten DHT22 – Solid Mid Range
Teyleten Robot DHT22
Voltage 3.3V to 5.5V
Humidity range 0 to 100 percent
Serial data bidirectional
Accuracy 2 percent
The Teyleten Robot DHT22 provides three modules suitable for varied projects. It operates between 3.3V to 5.5V with digital signal output. The humidity range covers 0 to 100 percent with 2 percent accuracy. This makes it versatile for indoor monitoring tasks.
Pros
- Wide humidity range
- Three units included
- Digital output
- Compatible with Arduino
Cons
- Lower rating than others
- Basic features
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Temperature measurement spans -40 to 80 degrees Celsius offering broad coverage. The bidirectional serial port simplifies code logic for data reading. It is fully interchangeable with standard DHT22 libraries on Arduino. This compatibility ensures easy integration into existing code.
While the rating is slightly lower it still offers reliable performance for basic tasks. The digital signal ensures stability against noise compared to analog sensors. Using three units allows you to set up a multi-sensor network easily.
For hobbyists needing multiple sensors at a moderate price this pack works well. The setup is straightforward for those familiar with DHT protocols. It serves as a dependable tool for general humidity tracking and simple automation.
Bidirectional Serial Port
The ability to send and receive data bidirectionally allows more advanced communication protocols. This flexibility supports complex systems requiring two-way command exchange.
Three Unit Convenience
Receiving three units in one package is cost effective for distributed monitoring systems. You can place sensors in different rooms without buying individually.
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9. DHT11 10-Pack – Bulk Value
10-Pack DHT11 Module
Voltage 3.3V to 5.5V
Humidity range 20 to 90 percent
Onboard capacitor
Long term stability
This 10-pack DHT11 module set is perfect for workshops or large scale projects. It features a user-friendly interface with onboard pull-up resistor. The single-wire digital output simplifies connections significantly. Each unit is calibrated for reliable environmental monitoring.
Pros
- Ten units included
- User-friendly integration
- Stable readings
- Support available
Cons
- Basic accuracy specs
- No advanced features
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Humidity measurement ranges from 20 to 90 percent with 5 percent accuracy. Temperature ranges from 0 to 50 degrees Celsius. The wide voltage compatibility makes it interchangeable with many microcontrollers. This versatility supports projects using Arduino IDE or MicroPython.
Long-term stability ensures drift is less than 1 percent humidity per year. This reduces the need for frequent calibration in static environments. It is an excellent choice for classrooms requiring multiple units for students.
Ideal for bulk deployment in smart homes or data logging networks this pack provides excellent value. The comprehensive documentation helps quickly get started. For enthusiasts needing multiple sensors this kit simplifies scaling your system.
Onboard Components Reduce Clutter
Having components built into the module means you do not need external resistors. This saves space on the circuit board and reduces wiring complexity.
Comprehensive Documentation Support
Technical references and user guides are available to assist with setup. This support ensures beginners can overcome initial hurdles quickly.
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10. DHT22 4Pcs – High Quality
4Pcs DHT22 Module
Temperature range -40 to 80C
Humidity range 0 to 100 percent
Digital output
Anti-interference
This 4Pcs DHT22 module set ensures reliable long-lasting performance with top electronics. It measures humidity from 0 to 100 percent with 2 percent accuracy. Temperature ranges from -40 to 80 degrees with 0.5 degree precision. The compact size fits in tight enclosures easily.
Pros
- High quality components
- Strong anti-interference
- Wide application range
- Compact size
Cons
- Average rating
- Single bus only
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Advanced digital output ensures long-term stability and strong anti-interference capabilities. The single-wire wiring simplifies integration into various applications. It operates on 3V to 5.5V DC making it versatile for most projects. This module is compatible with medical and control systems.
Four units allow flexible placement in different zones or backup availability. The digital output reduces noise compared to analog alternatives. It is well-suited for home appliances and humidity regulators.
Ideal for those needing robust components for commercial or industrial DIY projects this set performs well. The lightweight design helps in portable devices. For stable monitoring tasks this module offers quality consistent with its specs.
Strong Anti-Interference Design
High-performance microcontrollers filter out noise ensuring clean data readings. This stability is crucial in electrically noisy environments.
Compact Dimensions
The small size of 38mm by 15mm allows installation in tight spaces. This is useful for retrofitting existing devices without major modifications.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right humidity sensor involves evaluating several technical factors to ensure compatibility and performance.
Sensor Accuracy
Accuracy determines how close the reading is to the true humidity. Industrial applications often require 2 percent accuracy while hobbyist projects may tolerate 5 percent. Higher accuracy usually costs more but ensures data reliability for critical tasks.
For precise control choose sensors rated at 2 percent accuracy or better. For general monitoring standard models suffice.
Operating Voltage
Ensure the sensor matches your microcontroller voltage. Many Arduino boards run at 5V while some sensors need 3.3V. Check the data sheet to avoid damaging the module or getting incorrect readings.
Select a module that works within your power supply range to ensure safe operation.
Communication Interface
Digital interfaces like I2C or single-wire bus simplify wiring. I2C allows multiple devices on two pins while single-wire needs one pin but might use more code cycles. Choose based on available pins and coding comfort.
Use I2C for complex setups and single-wire for simple projects.
Measurement Range
Humidity ranges from 0 to 100 percent RH are ideal for all environments. Temperature ranges like -40 to 80 degrees Celsius cover outdoor and indoor needs. Verify the limits match your specific environment requirements.
Choose full range models for versatility across different climates.
Response Time
Fast response is vital for automation that needs to react quickly to changes. Standard modules respond in a few seconds. For critical systems look for specs mentioning quick response times.
Opt for faster sensors in dynamic environments.
Mounting Options
Modules with screw holes allow permanent installation. This is important for fixed weather stations. Compact designs fit better in enclosures.
Look for physical mounting features for stable deployment.
Long-Term Stability
Stability affects drift over time. High drift requires recalibration. Good sensors maintain accuracy for months without adjustment. Check drift specs for maintenance needs.
Select stable sensors to reduce maintenance overhead.
Support and Documentation
Well-documented sensors simplify coding. Check for libraries and example codes. Strong support ensures troubleshooting is easy.
Prioritize products with clear documentation for faster development.
How to Use and Care for Your Arduino Humidity Sensor
Connect the sensor to the Arduino power pins. Ensure ground connections are solid to avoid reading errors. Use the provided libraries to read digital data easily.
Avoid exposing the sensor to direct water or extreme temperatures. Enclosures protect against dust and moisture. Keep vents clear for air flow.
Check readings periodically for consistency. If values drift unexpectedly recalibrate or replace the module. Store unused units in dry conditions.
Frequently Asked Questions
What is the difference between DHT11 and DHT22?
DHT22 offers better accuracy and a wider temperature range than DHT11. DHT11 is cheaper and simpler but less precise. Choose DHT22 for higher precision needs.
Can I use these sensors outdoors?
Yes but protection against rain is essential. Use waterproof enclosures to prevent damage. DHT22 generally handles broader outdoor temperature ranges.
Do I need special libraries for Arduino?
Yes standard libraries exist for DHT models. Install them via the library manager. They simplify reading values directly.
How often should I calibrate?
Calibrate if readings drift over time. Most stable sensors need calibration annually. High precision ones may need more frequent checks.
What voltage should I power it with?
Most modules work at 3.3V or 5V. Check the datasheet. Use a regulated power source.
Can I connect multiple sensors?
Yes I2C supports multiple devices. DHT single-wire requires separate pins. Ensure your board has enough IO pins.
How do I protect it from dust?
Use a breathable fabric cover or mesh. Avoid sealing it completely. Airflow is necessary for accurate readings.
What is the average lifespan?
High quality modules last years with proper care. Stability specs indicate expected drift. Environmental stress affects longevity.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
The 10 listed sensors provide a comprehensive range of options from budget DHT11 models to precision AHT30 units. Each has specific strengths for different project requirements and technical needs.
Prioritize accuracy and interface type based on your specific application. Ensure voltage compatibility and mounting features match your build goals.
Always verify current pricing and stock before purchasing to get the best value for your project needs.