Teyleten Robot SHT31-D SHT31 Temperature Humidity Sensor Module
4.7Editor score
High accuracy I2C interface
Wide temperature measurement range
Stable long term performance
In this guide
Choosing the right sensor for your electronics projects can be challenging with so many options available. An Arduino humidity sensor helps you monitor environmental conditions accurately for various applications like weather stations or smart home devices.
We evaluated ten popular modules based on their technical specifications, ease of integration, and user feedback. Each product offers unique features such as different communication protocols and measurement ranges to suit specific project needs.
Every entry in this list highlights key performance metrics and practical considerations. Prices and availability may change frequently so please verify current details before purchasing to ensure you get the best value for your investment.
Top 3 Picks for Best Arduino Humidity Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
4.5Editor score
Single wire digital signal output
Wide voltage compatibility range
Pre calibrated internal components
2pcs DHT11 Temperature Humidity Sensor Module Digital Temperature Humidity Sensor
4.3Editor score
Affordable dual pack option
Simple single wire wiring
Integrated calibration technology
Top 10 Best Arduino Humidity Sensor in 2026 Compared
This table provides a side-by-side comparison of the top ten humidity sensor modules evaluated in this guide to help you quickly identify the best fit for your specific project requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HiLetgo 5pcs DHT11 Module
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Output digital single bus signal
Voltage supply 3.3 to 5 volts
4.5Editor score
Editor's Choice
2pcs DHT11 Module
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Output digital signal form
Voltage DC 3.3 to 5 volts
4.3Editor score
Best Premium
Teyleten Robot SHT31-D Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 125 degrees C
Output I2C interface
Voltage 2.4 to 5.5 volts
4.7Editor score
HiLetgo 2pcs DHT22 Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Output single bus digital
Screw holes for mounting
4.4Editor score
Teyleten Robot DHT11 Module 5pcs
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Voltage 3.3 to 5 volts
Lightweight design around 8 grams
4.4Editor score
DHT22 AM2302 Module 2pcs
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Compact size 28mm by 12mm
215mm connecting wire included
4.6Editor score
Teyleten Robot DHT22 Module 3pcs
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Voltage 3.3 to 5.5 volts
Single bus digital signal output
3.9Editor score
10-Pack DHT11 Humidity Sensor Module
Humidity range 20 to 90 percent
Temperature range 0 to 50 degrees C
Voltage 3.3 to 5.5 volts
Includes 5 modules and cables
4.6Editor score
4Pcs DHT22/AM2302 Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Voltage 3 to 5.5 volts
Lightweight 6.4 grams per unit
4.0Editor score
2pcs AHT30 High Precision Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 85 degrees C
Voltage 2.0 to 5 volts
4 pin test line connection
5.0Editor score
1. HiLetgo 5pcs DHT11 Module – Best Overall Value
HiLetgo 5pcs DHT11 Module
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Output digital single bus signal
Voltage supply 3.3 to 5 volts
The HiLetgo 5pcs DHT11 module is a reliable choice for beginners and experienced makers alike. With a high rating from users, this module stands out for its ease of use and consistent performance in standard environmental monitoring tasks.
Pros
- Simple single wire wiring scheme
- Bypass capacitor on-board included
- Fully interchangeable units provided
- Low cost bulk pack option
- Well documented communication protocol
Cons
- Limited temperature range compared to others
- Accuracy less precise than newer models
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Its single-wire wiring scheme significantly reduces the complexity of circuit design. The onboard bypass capacitor and pull-up resistor simplify integration with microcontrollers. This design choice minimizes external components needed and speeds up the prototyping process.
While the temperature range is limited to zero through fifty degrees Celsius it meets most indoor application needs. The accuracy is adequate for general projects though not suitable for scientific grade precision. This trade-off is acceptable given the price point.
Enthusiasts building multiple devices or classroom setups will appreciate the five unit pack. The included cables make it ready to use immediately. We recommend this module for anyone starting their journey into digital sensor integration.
Ease of Integration
The single bus digital signal output simplifies coding efforts significantly for users.
Cost Effectiveness
Getting five units for this price offers excellent value for bulk projects.
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2. 2pcs DHT11 Module – Reliable Standard Sensor
2pcs DHT11 Module
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Output digital signal form
Voltage DC 3.3 to 5 volts
This module provides a solid foundation for basic temperature and humidity monitoring projects. It is designed to work seamlessly with popular microcontrollers like Arduino and Raspberry Pi ensuring broad compatibility across different hardware platforms.
Pros
- Compatible with Raspberry Pi and Arduino
- Dedicated digital module inside
- High reliability construction
- Quick digital acquisition technology
- Stable long term operation
Cons
- Basic accuracy for extreme conditions
- Limited humidity range upper bound
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The sensor consists of a resistive element and an NTC temperature measurement device connected to an 8-bit microcontroller. This internal architecture ensures that the output is pre-calibrated and ready for digital signal processing without extra filtering.
Users should note the operating range is best suited for indoor environments. The humidity measure range covers typical room conditions well. For outdoor or industrial use cases you might consider models with wider temperature tolerance.
This dual pack offers a convenient solution for having spare units on hand. The simple communication protocol reduces programming effort allowing you to focus on project logic. It remains a popular choice for hobbyist electronics enthusiasts.
Broad Compatibility
Works with both Arduino and Raspberry Pi boards effectively.
Internal Calibration
Pre-calibrated digital output saves time during initial setup.
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3. Teyleten Robot SHT31-D Module – Highest Precision
Teyleten Robot SHT31-D Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 125 degrees C
Output I2C interface
Voltage 2.4 to 5.5 volts
The SHT31-D module stands out as a premium option for projects requiring high precision. With a rating of 4.7 stars it is praised for its ability to deliver consistent readings across a wide range of environmental conditions.
Pros
- Wide operating voltage range
- Superior temperature accuracy
- I2C protocol support
- Extensive humidity measurement range
- Robust industrial grade design
Cons
- Higher cost compared to DHT models
- Requires I2C bus wiring
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Its I2C interface allows for easy connection to multiple sensors on the same bus. This feature is particularly useful when you need to monitor temperature and humidity alongside other data points without consuming too many GPIO pins.
The accuracy of plus or minus 0.3 degrees Celsius is significantly better than entry-level sensors. This precision makes it suitable for scientific experiments or climate control systems where small variations matter. The humidity accuracy is also tight at plus or minus 2 percent.
While the price is higher it justifies the performance gains for critical applications. The wide voltage range adds flexibility for different power sources. We recommend this module when accuracy is more important than low cost.
Precision Measurement
Temperature accuracy of 0.3 degrees ensures reliable data collection.
Protocol Flexibility
I2C communication supports multi-device setups without complex wiring.
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4. HiLetgo 2pcs DHT22 Module – Enhanced Accuracy
HiLetgo 2pcs DHT22 Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Output single bus digital
Screw holes for mounting
The DHT22 offers improved performance over the standard DHT11 module making it a favorite for intermediate projects. Its enhanced chip provides better resolution and accuracy for both temperature and humidity measurements.
Pros
- Higher accuracy than DHT11
- Wider temperature range
- Bidirectional serial data
- Screw holes for installation
- High sensitive chip inside
Cons
- Slightly slower response time
- Requires careful timing for readings
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One notable feature is the fixing screw hole which allows for secure mounting. This is useful for permanent installations where vibration or movement could disturb the sensor. The bidirectional serial data output ensures reliable communication with your microcontroller.
While it is an upgrade from the DHT11 it still requires precise timing during data acquisition. The protocol is single-bus but more complex to code correctly compared to simple digital pins. Careful implementation prevents reading errors.
This pack provides two units which is good for redundancy in larger systems. The temperature range extends to negative forty degrees Celsius enabling usage in colder environments. We suggest this module for weather station builds.
Secure Mounting
Screw holes allow fixed installation without external brackets.
Expanded Range
Wider temperature capabilities support diverse environmental conditions.
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5. Teyleten Robot DHT11 Module 5pcs – Bulk Pack Option
Teyleten Robot DHT11 Module 5pcs
Humidity range 20 to 95 percent
Temperature range 0 to 50 degrees C
Voltage 3.3 to 5 volts
Lightweight design around 8 grams
This five pack from Teyleten Robot provides a great value for projects needing multiple sensor points. The units are identical in function to standard DHT11 modules but come in a convenient bundle for bulk usage.
Pros
- Five units for low price
- Compatible with Raspberry Pi
- Lightweight construction
- Standard digital output
- Stable long term use
Cons
- Basic measurement accuracy
- Not for extreme temperatures
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Each sensor weighs only about eight grams which makes them ideal for weight sensitive applications. The operating voltage range supports most standard microcontrollers without requiring additional regulators. This simplifies the power supply design.
Accuracy remains within typical limits for this class of sensor. The humidity measurement error is acceptable for general monitoring tasks. Users looking for high precision should consider SHT or AHT series alternatives instead.
The inclusion of multiple units allows for testing across different locations simultaneously. It is perfect for classroom workshops or prototyping phases. We recommend this pack for educational purposes and simple home automation.
Value for Money
Five sensors in one package offer excellent cost efficiency.
Lightweight Design
Minimal weight ensures it does not impact lightweight projects.
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6. DHT22 AM2302 Module 2pcs – Easy Connection
DHT22 AM2302 Module 2pcs
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Compact size 28mm by 12mm
215mm connecting wire included
This module from JTAREA is designed with convenience in mind by including a 215mm connecting wire. This feature reduces the need for additional jumper wires during initial setup and speeds up the prototyping process.
Pros
- Long connecting wires included
- Compact physical dimensions
- Stable performance characteristics
- Quick response time
- Anti-interference capabilities
Cons
- Wires may need trimming
- Requires stable power supply
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The compact size fits easily into tight enclosures or small PCB designs. Despite its small footprint it maintains a wide operating range for both temperature and humidity. The measurement accuracy remains consistent over time.
It features quick response times and strong anti-interference capabilities which are crucial for reliable data collection. The bidirectional serial data ensures that your controller receives clean signals. This helps in environments with high electrical noise.
With a rating of 4.6 stars users are satisfied with the reliability. The two pack allows for redundancy in critical monitoring systems. We suggest this module for home automation or weather station projects.
Ready to Connect
Included wires save time on initial circuit assembly.
Compact Footprint
Small dimensions allow placement in restricted spaces.
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7. Teyleten Robot DHT22 Module 3pcs – Balanced Performance
Teyleten Robot DHT22 Module 3pcs
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Voltage 3.3 to 5.5 volts
Single bus digital signal output
This three pack of DHT22 modules offers a middle ground in terms of quantity and capability. The sensors are capable of measuring humidity across the full zero to one hundred percent range which covers almost all practical needs.
Pros
- Wide voltage supply range
- Full humidity percentage range
- Digital signal output
- Three unit pack
- Compatible with Arduino
Cons
- Lower user rating than others
- Quality variance possible
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The wide operating voltage of three point three to five point five volts gives you flexibility with power sources. This tolerance helps ensure that the sensor works even with minor voltage fluctuations in your circuit.
While the user rating is lower than some competitors the core functionality remains solid. It is a standard replacement for older SHT11 models and provides better accuracy than the DHT11. Proper wiring is essential for best results.
We recommend this for projects needing multiple sensors with decent performance. The digital output simplifies interface logic. It is a reliable choice for general purpose monitoring where extreme precision is not required.
Voltage Flexibility
Wide voltage input supports various battery and supply setups.
Standard Replacement
Ideal upgrade from older sensor models in existing projects.
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8. 10-Pack DHT11 Module – Ultimate Bulk Kit
10-Pack DHT11 Module
Humidity range 20 to 90 percent
Temperature range 0 to 50 degrees C
Voltage 3.3 to 5.5 volts
Includes 5 modules and cables
The ten pack option is perfect for workshops or classrooms where many students need individual kits. It offers excellent value and ensures you have spares if a unit fails during testing or long term use.
Pros
- Ten units in one pack
- High customer satisfaction
- Onboard components included
- Simple user friendly design
- Stable long term operation
Cons
- Large quantity may be excess
- Standard accuracy limits
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Each module comes with onboard components like bypass capacitors and pull-up resistors. This minimizes external circuitry and simplifies connections to your microcontroller I/O ports. You can start coding immediately without building extra support circuits.
Stable readings are a key feature noted by users. The calibration ensures reliable digital signal output over time. This consistency is important for projects that run continuously for days or weeks without intervention.
We suggest this pack for bulk orders or shared resources. The wide voltage range compatibility supports various development boards. It is a robust choice for educational and large scale automation projects.
Bulk Utility
Large quantity supports classroom or group project needs effectively.
Integrated Components
Onboard parts reduce wiring complexity and error risks.
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9. 4Pcs DHT22/AM2302 Module – Compact and Light
4Pcs DHT22/AM2302 Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 80 degrees C
Voltage 3 to 5.5 volts
Lightweight 6.4 grams per unit
These modules weigh only 6.4 grams each which makes them ideal for portable or lightweight setups. The precision of the humidity sensor is highlighted as a key benefit in the product data.
Pros
- Very light unit weight
- Precise humidity measurement
- Fast transmission speed
- Anti-interference design
- Multiple application support
Cons
- Requires specific programming tools
- Basic casing design
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The transmission speed is stable and fast ensuring quick data updates. This is useful for real-time monitoring applications. The digital output includes strong anti-interference capabilities to protect against noise.
While the casing is compact it includes necessary features for mounting. The compatibility with automatic control and home appliances is noted. This versatility allows the sensor to be used in many different contexts.
We recommend this module for portable projects where weight matters. The four pack provides a good supply for development. It is a solid choice for smart home or medical device prototypes.
Portability
Minimal weight ensures sensor does not burden portable projects.
Real-Time Data
Fast transmission supports instant monitoring requirements.
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10. 2pcs AHT30 High Precision Module – Advanced Upgrade
2pcs AHT30 High Precision Module
Humidity range 0 to 100 percent
Temperature range minus 40 to 85 degrees C
Voltage 2.0 to 5 volts
4 pin test line connection
The AHT30 module has achieved a perfect rating from users who value precision and reliability. It represents an upgraded version of previous AHT models offering improved features and better performance in similar form factors.
Pros
- Perfect user rating
- I2C communication support
- Wide operating voltage
- High resolution measurement
- Upgraded version features
Cons
- May require I2C library knowledge
- Limited unit count
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The I2C communication allows for easy multi-device access on the same bus. This feature supports simultaneous online access to multiple I2C electronic devices or modules. The four pin test line connection makes setup quick for users.
Resolution is very high at 0.01 degrees Celsius for temperature and 0.024 percent for humidity. This level of detail is rare at this price point. It is suitable for advanced applications requiring fine measurements.
We recommend this module for enthusiasts seeking high accuracy. The low power consumption and stable transmission make it ideal for battery operated projects. It is an excellent upgrade from older sensor types.
High Resolution
Resolution of 0.01 degrees enables fine detail tracking.
Easy Setup
Four pin connection allows fast installation and testing.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right sensor involves balancing accuracy, range, and ease of use. This guide outlines the key factors to consider before making your decision.
Measurement Range
Check the humidity and temperature ranges the sensor can handle. Standard DHT sensors often cover indoor ranges while industrial models support extreme temperatures or full humidity percentages.
Choose a model that matches your environment to avoid errors or damage.
Communication Protocol
Sensors use different interfaces like single-bus digital or I2C. I2C allows multiple devices on two wires while single-bus uses one data line per sensor.
Match the protocol to your available pins and project complexity.
Accuracy and Precision
Higher precision models like SHT31 or AHT30 offer tighter tolerances than entry level DHT11 sensors. Consider whether you need scientific grade accuracy or general monitoring.
Accuracy affects how reliable your data is over time.
Operating Voltage
Modules support various voltage levels from 2.0V to 5.5V. Ensure your power source matches the sensor requirements to prevent damage or instability.
Check the voltage specs to match your board capabilities.
Mounting and Size
Some modules have screw holes for secure mounting while others rely on adhesive. Compact sizes are better for enclosed or portable projects.
Select a physical design that fits your enclosure space.
Response Time
Fast response times are necessary for real-time applications. Some sensors update quicker than others depending on internal processing.
Look for specs on delay or response speed if timing matters.
Pack Quantity
Buying in bulk packs can save money if you need multiple units. Ensure the price aligns with the number of sensors included.
Bulk options are great for testing or educational setups.
Documentation
Good libraries and clear pinouts help speed up development. Check if the seller provides guides or support resources.
Support reduces frustration during coding and debugging.
How to Use and Care for Your Arduino Humidity Sensor
Start by connecting the VCC and GND pins to your board power and ground. Connect the data pin to a digital I/O pin. Check the voltage range before powering on.
Use a library like Adafruit_DHT or Wire for I2C models. Upload a simple sketch to test readings on the serial monitor. Verify output values are within expected limits.
Keep the sensor away from direct heat sources or humidity sources like boiling water. Regularly check connections for stability. Clean the module gently with compressed air if dust accumulates.
Frequently Asked Questions
What is the difference between DHT11 and DHT22?
DHT22 offers higher accuracy and a wider temperature range than DHT11. It is better suited for professional projects while DHT11 is fine for basic hobbyist use. Both use single wire digital protocols.
Can I connect multiple sensors to Arduino?
Yes you can connect multiple sensors but you need separate data pins for each. Alternatively use I2C sensors which share the same two lines. This saves space on your board.
Why are my sensor readings unstable?
Unstable readings may be caused by loose wiring or power issues. Ensure connections are secure and use a stable voltage source. Adding a capacitor across VCC and GND can help smooth noise.
Do I need an external pull-up resistor?
Many modules have onboard resistors so no external one is needed. Check the product description for details. Some bare sensors might require a resistor to function correctly.
How do I fix slow response times?
Response time depends on the sensor model and update rate. Wait at least two seconds between readings for DHT22. For faster updates choose models designed for quick transmission speeds.
Which sensor is best for outdoor weather stations?
Modules with wide temperature ranges and sealed enclosures are best. SHT31 or DHT22 models offer better weather resistance than DHT11. Consider protection against rain and direct sunlight for longevity.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
We reviewed ten top options ranging from basic DHT11 modules to high precision SHT and AHT sensors. Each has its strengths depending on your specific project requirements and budget.
Prioritize accuracy and range if you need reliable data for scientific or outdoor applications. For general use standard models offer a balanced mix of cost and performance.
Always check current stock and pricing before ordering to ensure you get the right value. With the right sensor you can monitor environmental conditions effectively and efficiently.