Teyleten Robot AHT30 Module
5.0Editor score
I2C communication protocol
High precision measurements
Wide voltage range support
In this guide
Selecting the right sensor is crucial for any embedded system that monitors environmental conditions. A reliable device ensures your data logging or automation projects run smoothly without constant recalibration or false readings that confuse your logic.
We evaluated ten popular modules based on accuracy, ease of integration, and voltage compatibility with common microcontrollers. Our analysis covers single-wire digital sensors and I2C options to help you choose the best fit for your specific application requirements.
Each pick highlights key specifications and ideal use cases for builders at any skill level. Please note that availability and pricing fluctuate frequently, so verify the current details on the product page before finalizing your purchase decision.
Top 3 Picks for Best Arduino Humidity Sensor
HiLetgo DHT11 5-Pack
4.5Editor score
Simple single-wire interface
Includes connecting cables
Bypass capacitor on board
Teyleten Robot SHT31-D Module
4.7Editor score
Full 100 percent humidity range
Superior temperature accuracy
I2C digital output interface
Top 10 Best Arduino Humidity Sensor in 2026 Compared
The following table provides a side-by-side comparison of all ten selected modules. Review the specifications to identify which sensor best matches your project needs for voltage range, measurement accuracy, and interface type.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HiLetgo DHT11 Module
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Digital Single Wire Output
Accuracy Plus or Minus 5 percent
4.5Editor score
Editor's Choice
2pcs DHT11 Module
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Single Wire Digital Interface
Temperature Range Zero to Fifty degrees
4.3Editor score
Best Premium
Teyleten SHT31-D Module
Voltage 2.4 to 5.5V
Humidity Range Zero to 100 percent
I2C Digital Output
Accuracy Plus or Minus 2 percent
4.7Editor score
HiLetgo DHT22 Module
Voltage 3.3 to 5V
Humidity Range Zero to 100 percent
Bidirectional Serial Data Output
Accuracy Plus or Minus 2 percent
4.4Editor score
Teyleten DHT11 Module
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Digital Signal Output
Measurement Error Plus or Minus 5 percent
4.4Editor score
DHT22 AM2302 Sensor
Voltage 3.3 to 5V
Humidity Range Zero to 100 percent
Single Bus Digital Signal
Temperature Range Minus 40 to 80
4.6Editor score
Teyleten DHT22 Module
Voltage 3.3 to 5.5V
Humidity Range Zero to 100 percent
Serial Data Bidirectional Port
Temperature Range Minus 40 to 80
3.9Editor score
10-Pack DHT11 Module
Voltage 3.3 to 5.5V
Humidity Range 20 to 90 percent
Onboard Bypass Capacitor
Stability Less Than Plus or Minus 1 percent
4.6Editor score
4Pcs DHT22 Module
Voltage 3 to 5.5V
Humidity Range Zero to 100 percent
Single Bus Digital Output
High Sensitive Temperature Sensor
4.0Editor score
Teyleten AHT30 Module
Voltage 2.0 to 5.5V
Humidity Range Zero to 100 percent
I2C Master Output
Temperature Range Minus 40 to 85
5.0Editor score
1. HiLetgo DHT11 – Best for Beginners
HiLetgo DHT11 5-Pack
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Accuracy Plus or Minus 5 percent
Resolution 1 percent humidity
The HiLetgo 5-Pack DHT11 module stands out as the most accessible entry point for hobbyists. It holds a solid rating of 4.5 stars and simplifies integration with its onboard components and included wiring.
Pros
- Easy single-wire interface
- Includes wires and cables
- Compatible with 3.3V logic
- Affordable bulk purchase option
- Pre-calibrated digital output
Cons
- Limited humidity measurement range
- Slower sampling rate
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Its pre-calibrated digital output ensures you can read environmental data without complex analog signal processing. The single-wire protocol significantly reduces the programming effort required for Arduino and ESP8266 projects.
While it offers a humidity range of only 20 to 95 percent RH, this covers most indoor use cases. The accuracy of plus or minus 5 percent is sufficient for general monitoring tasks.
We recommend this for students and DIY builders who need multiple sensors for a project without breaking the bank. Its interchangeability and stability make it a reliable choice for prototyping.
Integrated Components Simplify Wiring
The module comes with a bypass capacitor and pull-up resistor on board. This minimizes external circuitry and ensures stable communication with your microcontroller without extra parts.
Ideal for Indoor Monitoring
With a measurement range of 20 to 95 percent humidity, this sensor is perfect for indoor climate control. It tracks standard room conditions effectively for smart home automation.
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2. 2pcs DHT11 – Most Affordable
2pcs DHT11 Module
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Temperature Range Zero to 50 degrees
Error Plus or Minus 2 degrees
This two-pack DHT11 sensor offers a practical solution for projects requiring paired devices or simple replacements. It maintains the same reliable specifications as other DHT11 modules at a competitive price point.
Pros
- Cost-effective packaging
- Direct integration support
- Standard 3.3 to 5V range
- Simple digital protocol
- High long-term stability
Cons
- Basic accuracy for tight tolerances
- Requires external pull-up if not included
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It uses a dedicated digital module to ensure reliable and accurate long-term stability. The resistive element and NTC temperature device provide consistent readings over time.
The single-wire scheme makes it easy to integrate into other applications quickly. However, be mindful of the limited temperature and humidity ranges compared to newer models.
Buyers seeking a no-fuss component for basic weather stations or classroom experiments should consider this option. It balances simplicity and functionality well for general electronic practice.
Reliable Digital Signal Output
The sensor utilizes a high-performance 8-bit microcontroller for signal processing. This ensures a stable digital output that is easy to read with standard GPIO pins.
Wide Platform Compatibility
Designed for use with Arduino and Raspberry Pi boards. The voltage range of 3.3V to 5V makes it versatile for various microcontroller families.
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3. Teyleten SHT31-D – Best High Precision
Teyleten SHT31-D Module
Humidity Range Zero to 100 percent
Temperature Range Minus 40 to 125
Accuracy Plus or Minus 0.3 degrees
I2C Interface Output
The Teyleten SHT31-D module provides exceptional precision for critical applications like climate control systems. Its 4.7 rating reflects its robust performance and advanced digital capabilities.
Pros
- Superior temperature accuracy
- Full 100 percent humidity range
- Wide voltage operation range
- I2C digital communication
- High reliability for labs
Cons
- Higher cost per unit
- Requires I2C bus knowledge
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With a temperature accuracy of plus or minus 0.3 degrees, it outperforms most budget sensors. The humidity range of 0 to 100 percent allows for full environmental monitoring without saturation limits.
Operating at 2.4 to 5.5V ensures flexibility with different power sources. The I2C interface enables multiple sensors to share the same bus efficiently.
This sensor is ideal for engineers and advanced hobbyists needing exact readings. Its high performance justifies the investment for professional or scientific monitoring tasks.
Full Humidity Coverage
Unlike many entry-level sensors, this unit measures from zero to one hundred percent RH. This ensures accurate readings in extreme conditions like steam rooms or freezers.
Wide Voltage Operation
The operating voltage ranges from 2.4V to 5.5V DC. This wide tolerance protects the sensor from minor power supply fluctuations during testing.
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4. HiLetgo DHT22 – Best Mid-Range
HiLetgo DHT22 Module
Temperature Range Minus 40 to 80
Humidity Range Zero to 100 percent
Accuracy Plus or Minus 0.5 degrees
Single-bus digital signal
The HiLetgo DHT22 module upgrades the classic DHT11 with improved accuracy and a wider operating range. It is a solid choice for those who need better performance without I2C complexity.
Pros
- Higher accuracy than DHT11
- Wider temperature range
- Full humidity range
- Screw hole for mounting
- Compatible with legacy codes
Cons
- Slightly higher latency
- No onboard capacitor
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Its temperature range extends from minus 40 to 80 degrees, covering extreme environments. The humidity range of zero to 100 percent provides complete environmental coverage.
The fixing screw hole allows for convenient installation in permanent setups. It offers a reliable bidirectional serial data output for accurate readings.
This sensor suits home automation and weather station projects where precision matters. It balances cost and performance effectively for general electronic practice.
Advanced AOSONG Chip
The main chip is the AOSONG AM2302 high-sensitive sensor. This component ensures stable performance and quick response times for dynamic environmental changes.
Easy Physical Mounting
The module includes a fixing screw hole for secure attachment. This design feature simplifies installation in enclosed boxes or mounted cases.
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5. Teyleten DHT11 – Good for Bulk
Teyleten DHT11 Module
Voltage 3.3 to 5V
Humidity Range 20 to 95 percent
Error Plus or Minus 2 degrees
Weighs about 8g
The Teyleten DHT11 module offers a standard 5-pack option for those requiring multiple units. It is lightweight and provides the same fundamental functionality as other DHT11 models.
Pros
- Lightweight design
- Standard compatibility
- Easy to source
- Digital output
- Consistent batch quality
Cons
- Accuracy similar to other DHT11
- No advanced features
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Its operating voltage of 3.3V to 5V ensures compatibility with most development boards. The humidity measurement range of 20 to 95 percent is adequate for indoor monitoring.
With a weight of about 8 grams, it is easy to integrate into portable projects. The error rate of plus or minus 2 degrees matches the general expectation for this type.
Buyers can rely on this for educational kits or simple prototypes. It is a straightforward choice for basic Arduino projects needing multiple sensors.
Compact and Light
Weighing about 8 grams, this sensor is ideal for portable devices. Its small physical footprint helps save space in tight enclosures.
Standard Digital Output
The module uses a standard single-wire digital interface. This makes it highly compatible with popular Arduino and Raspberry Pi libraries.
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6. JTAREA DHT22 – Reliable Performance
DHT22 AM2302 Sensor
Temperature Range Minus 40 to 80
Humidity Range Zero to 100 percent
215mm connecting wire
Screw holes for mounting
The JTAREA DHT22 sensor module provides stable performance for automatic control and home appliances. It includes cables to simplify wiring for immediate testing in DIY projects.
Pros
- Quick response times
- Includes connecting cables
- Screw holes included
- Wide application support
- Compact size
Cons
- Cable length may vary
- Standard accuracy level
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Its quick response times make it suitable for real-time monitoring applications. The compact size and screw holes facilitate secure and clean installation.
Operating within a standard voltage range ensures broad compatibility with existing projects. The wide application support covers weather stations and humidity regulators.
This option is excellent for users who want a ready-to-use package. The included cables save time on sourcing extra components for your build.
Complete Kit Inclusion
The package includes a 215mm connecting wire for each sensor. This ready-to-use feature reduces the assembly time for new projects.
Broad Application Support
It is designed for weather stations and home appliances. The reliable performance ensures it fits various humidity detection and control systems.
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7. Teyleten DHT22 – Value Pack
Teyleten DHT22 Module
Voltage 3.3 to 5.5V
Humidity Range Zero to 100 percent
Temperature Range Minus 40 to 80
Accuracy Plus or Minus 2 percent
The Teyleten DHT22 3-pack offers a cost-effective way to acquire multiple sensors. It supports a wide voltage range and provides full humidity coverage for general use.
Pros
- Three-piece pack value
- Wide voltage support
- Standard AM2302 chip
- Bidirectional serial port
- Replacement for SHT series
Cons
- Lower rating than competitors
- Variable performance batches
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The digital signal output is bidirectional, allowing efficient data exchange with your microcontroller. It replaces older SHT11 models with improved accuracy.
While the rating is slightly lower, it remains a viable option for hobbyists on a budget. The measurement range of zero to 100 percent is robust for most needs.
Consider this for large projects where many sensors are required. It balances cost with the functionality needed for standard environmental monitoring tasks.
Wide Voltage Support
The working voltage ranges from 3.3V to 5.5V. This flexibility allows it to operate with various power sources and boards.
Efficient Serial Port
The module uses a serial data bidirectional port. This design ensures reliable communication and accurate data transfer during operation.
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8. Bulk DHT11 – Best Quantity
10-Pack DHT11 Module
Humidity Range 20 to 90 percent
Long-term stability rating
Bypass capacitor on board
Compatible with multiple controllers
The 10-Pack DHT11 module is designed for large-scale projects or workshops needing many sensors. It boasts a high stability rating and includes connecting cables for convenience.
Pros
- High volume package
- Includes 5 cables
- High stability
- Onboard bypass capacitor
- Wide voltage compatibility
Cons
- Limited humidity range
- Bulk size may be large
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Built around a high-performance microcontroller, it offers reliable long-term performance. The onboard bypass capacitor minimizes noise and ensures stable readings.
Its wide voltage compatibility supports 3.3V to 5.5V for versatile use. This pack is ideal for classrooms or enthusiasts needing multiple units.
Buyers can get started quickly with this user-friendly kit. It provides excellent value for bulk needs without compromising on essential stability.
Long-Term Reliability
The sensor is rated for less than plus or minus 1 percent RH per year. This stability ensures accurate readings over extended periods without recalibration.
Integrated Circuitry
The module features a bypass capacitor and pull-up resistor on board. This design minimizes external wiring and simplifies connections to your project.
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9. 4Pcs DHT22 – Compact Design
4Pcs DHT22 Module
Humidity Range Zero to 100 percent
Temperature Range Minus 40 to 80
Precision Plus or Minus 2 percent
Compact size 38mm x 15mm
The 4Pcs DHT22 module features a compact design suitable for tight enclosures. It uses top-of-the-line electronics components to ensure reliable performance.
Pros
- Compact physical size
- High precision electronics
- Low interference design
- Full range measurement
- Lightweight
Cons
- Variable user feedback
- Standard accuracy level
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Its accuracy of plus or minus 2 percent provides consistent environmental readings. The single-wire wiring scheme simplifies integration into various applications.
The lightweight design at 6.4 grams makes it easy to mount. High sensitive temperature humidity sensor ensures it captures detailed data.
Buyers looking for a small package should consider this option. It offers the full range of temperature and humidity measurements efficiently.
Advanced Electronics
The module is made with top-of-the-line electronics components. This design choice ensures long-lasting performance for your DIY projects.
Compact Size
It features a compact size of 38mm by 15mm by 10mm. This small footprint helps save space in your device housing.
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10. Teyleten AHT30 – Precise Upgraded
Teyleten AHT30 Module
Voltage 2.0 to 5.5V
Humidity Range Zero to 100 percent
Temperature Range Minus 40 to 85
Resolution 0.024 percent RH
The Teyleten AHT30 module delivers high precision for sensitive monitoring tasks. With a perfect rating of 5.0, it stands out for its accurate measurements.
Pros
- I2C communication
- High precision resolution
- Low power consumption
- Multiple device access
- Easy voltage adaptation
Cons
- I2C wiring complexity
- Requires specific libraries
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It uses I2C communication to support simultaneous access to multiple devices. This reduces pin usage and improves transmission speed.
The low power consumption and simple circuit design make it adaptable. It offers a resolution of 0.024 percent RH for detailed data logging.
Users seeking high precision should prefer this over standard digital sensors. The upgraded design provides reliable and stable transmission speeds.
High Precision Resolution
The resolution of humidity is 0.024 percent RH. This fine detail allows for monitoring subtle changes in environmental conditions.
I2C Efficiency
It supports I2C master output for multiple device access. This protocol allows you to connect several sensors on one bus.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right humidity sensor involves balancing accuracy, interface type, and environmental range. Understanding these factors helps you avoid compatibility issues and ensure your project runs smoothly.
Measurement Accuracy
Accuracy determines how close the sensor reading is to the actual humidity level. Premium sensors like the SHT31 offer better precision, which is vital for climate control applications.
Look for sensors with a lower percentage error for your specific needs.
Communication Interface
Digital sensors use single-wire interfaces while others use I2C. I2C allows multiple sensors on fewer pins, but single-wire is easier to implement.
Choose an interface that matches your microcontroller's available pins.
Voltage Requirements
Ensure the sensor works with your microcontroller's logic voltage. Most modules operate between 3.3V and 5V, but checking this prevents damage to the board.
Always verify the supply voltage range in the documentation.
Temperature and Humidity Range
Different sensors cover different ranges. Some only measure indoor levels while others support extreme environments like freezers or saunas.
Select a sensor that covers your project's expected environment.
Response Time
Response time refers to how quickly the sensor reacts to changes in humidity. Faster response times are better for real-time control systems.
Check the datasheet for response time specifications.
Power Consumption
Battery-powered projects need low-power sensors. Some models consume significantly less energy when active or in standby modes.
Prioritize low power consumption for wireless devices.
Mounting Options
Some modules include screw holes for secure mounting while others are adhesive. Physical mounting options affect durability and placement flexibility.
Choose a mounting style that fits your enclosure.
Documentation and Support
Good documentation helps you integrate the sensor quickly. Look for models with clear libraries and active community support.
Ensure the product includes guides for setup.
How to Use and Care for Your Arduino Humidity Sensor
Connect the power and data pins to your microcontroller following the wiring guide. Ensure the correct pull-up resistor is used if it is not included on the board.
Install the necessary library in your IDE to read digital signals efficiently. Calibrate the sensor by comparing it to a reference device if possible.
Protect the sensor from direct water exposure and dust to maintain accuracy. Keep the enclosure ventilated to allow air flow around the sensitive element.
Frequently Asked Questions
Can I use a DHT11 sensor with 3.3V logic?
Yes, the DHT11 supports 3.3V logic but you should check the specific model details. It is generally safer to use 5V with a voltage divider for data signals if needed.
What is the difference between DHT11 and DHT22?
The DHT22 offers better accuracy and a wider temperature and humidity range than the DHT11. It also has a slightly higher cost but provides more reliable readings.
How often should I calibrate my humidity sensor?
Calibration depends on the usage environment but generally once a year is sufficient. If you notice drift in readings, recalibrate or replace the unit.
Can I connect multiple sensors to one Arduino?
Yes, you can connect multiple sensors using different digital pins or an I2C bus. Ensure your code manages each sensor's unique address or pin correctly.
Do I need a pull-up resistor for these sensors?
Some modules have a built-in pull-up resistor while others do not. Check the circuit diagram to avoid communication errors on the data line.
What is the best sensor for outdoor use?
For outdoor use, select a sensor with a wide temperature range and robust housing. The SHT31 or DHT22 are better suited than the DHT11.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
We reviewed ten top sensors ranging from the budget-friendly DHT11 to the precise SHT31 and AHT30. Each option offers specific benefits for different project requirements.
Prioritize accuracy and voltage compatibility when making your final decision. A suitable sensor ensures your data remains reliable and your code runs smoothly.
Check current availability and details before purchasing as stock levels change. Your choice should align with your project goals and budget constraints.