HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
4.5Editor score
Single-wire digital output
Wide 3.3V to 5V range
5-pack includes connecting wires
In this guide
Selecting the right Arduino humidity sensor is crucial for accurate environmental monitoring projects. Whether you are building a weather station or controlling home automation, precision matters. A good sensor delivers reliable data across varying temperature and humidity ranges without excessive calibration needs.
We evaluated ten leading humidity sensor modules based on accuracy, voltage compatibility, interface type, and overall build quality. Our analysis covers budget-friendly options and high-precision industrial-grade modules suitable for diverse Arduino applications and development boards.
Each pick highlights specific strengths like I2C communication or wide voltage ranges to help you choose efficiently. Prices and availability fluctuate regularly, so verify current listings before purchasing to ensure you get the best value for your specific project requirements.
Top 3 Picks for Best Arduino Humidity Sensor
Teyleten Robot SHT31-D SHT31 Temperature Humidity Sensor Module
4.7Editor score
High accuracy I2C interface
Operates 2.4V to 5.5V
3-pack for multiple projects
2pcs AHT30 High Precision Digital Temperature and Humidity Sensor
5.0Editor score
Superior 0.3C accuracy
I2C communication protocol
Low power consumption design
Top 10 Best Arduino Humidity Sensor in 2026 Compared
This side-by-side comparison highlights key specifications across all ten selected humidity sensor modules. Evaluate ranges, accuracies, and interface types to determine which module fits your specific Arduino development needs.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo 5pcs DHT11
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Single wire digital output
Voltage 3.3V to 5V
4.5Editor score
Editor's Choice
2pcs DHT11 Temperature Humidity Sensor
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Digital output signal
3.3V to 5V supply
4.3Editor score
Editor's Choice
Teyleten Robot SHT31-D
Humidity 0 to 100 percent
Temperature minus 40 to 125 C
I2C interface output
Voltage 2.4V to 5.5V
4.7Editor score
HiLetgo 2pcs DHT22/AM2302
Humidity 0 to 100 percent
Temperature minus 40 to 80 C
Single-bus digital signal
Voltage 3.3V to 5V
4.4Editor score
Teyleten Robot DHT11
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Voltage 3.3V to 5V
Includes connecting cables
4.4Editor score
DHT22 Digital Temperature and Humidity Sensor
Humidity 0 to 100 percent
Temperature minus 40 to 80 C
Single-bus digital output
Compact 28mm length design
4.6Editor score
Teyleten Robot DHT22 / AM2302
Humidity 0 to 100 percent
Temperature minus 40 to 80 C
Voltage 3.3V to 5.5V
Serial bidirectional data
3.9Editor score
10-Pack DHT11 Humidity Sensor Module
Humidity 20 to 90 percent
Temperature 0 to 50 Celsius
Voltage 3.3V to 5.5V
Includes onboard pull-up resistor
4.6Editor score
4Pcs DHT22/AM2302
Humidity 0 to 100 percent
Temperature minus 40 to 80 C
Voltage 3.3V to 5.5V
High quality components
4.0Editor score
2pcs AHT30 High Precision Digital
Humidity 0 to 100 percent
Temperature minus 40 to 85 C
I2C master output
Voltage 2.0V to 5.5V
5.0Editor score
1. HiLetgo DHT11 – Best Budget Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Single wire digital signal
Voltage 3.3V to 5V
The HiLetgo DHT11 module stands out as an entry-level solution for basic environmental monitoring. With a 4.5 star rating, it offers reliable digital readings for hobbyists needing straightforward temperature and humidity data without complex setup procedures.
Pros
- Very affordable per unit cost
- Simple single-wire interface
- Includes bypass capacitor onboard
- Compatible with 3.3V systems
- 5 pack provides extra units
Cons
- Limited humidity measurement range
- Moderate accuracy compared to newer models
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Its single-wire communication protocol significantly reduces wiring complexity and programming effort. The onboard pull-up resistor and bypass capacitor ensure stable signal transmission when connected to standard Arduino I/O ports, making it ideal for rapid prototyping.
While it lacks the wide temperature range of premium sensors, its 0 to 50 degree Celsius operation covers most indoor applications effectively. The 20 to 95 percent humidity range is sufficient for home climate tracking projects.
This module is best suited for students and beginners requiring multiple units for class projects or simple data logging. Its affordability makes it a practical choice for testing environmental concepts before committing to high-precision hardware.
Streamlined Integration for Beginners
The single-wire design minimizes pin usage on your microcontroller, leaving more I/O ports available for additional components like displays or actuators.
Cost-Effective Bulk Value
Getting five sensors in one package allows you to monitor multiple zones without purchasing additional units later.
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2. 2pcs DHT11 – Reliable Starter Pack
2pcs DHT11 Temperature Humidity Sensor Module
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Digital output signal
Includes connection wires
This compact 2-pack of DHT11 modules provides essential monitoring capabilities for DIY electronics. It features a calibrated digital output that simplifies reading humidity and temperature values directly without requiring complex analog to digital conversion.
Pros
- Includes pre-attached wires
- Works with Raspberry Pi and Arduino
- Stable long-term performance
- Compact and lightweight design
- Easy to integrate
Cons
- Only two units in pack
- Standard accuracy limitations
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The resistive element and NTC temperature device combination ensures consistent readings over time. Integration is straightforward due to the dedicated digital module and high-performance 8-bit microcontroller embedded within the sensor unit.
Its 3.3V to 5V working voltage allows seamless operation with most common microcontrollers. The single-wire scheme reduces clutter in your circuit and speeds up the physical assembly process significantly.
Buyers should consider this option for small projects requiring only one or two sensors. While not the widest range available, it delivers dependable performance for standard indoor climate control tasks.
Universal Compatibility
Designed to work with both Arduino and Raspberry Pi platforms, making it versatile for cross-platform development.
Ready to Use
Pre-attached wires eliminate the need for soldering, allowing you to connect immediately to your breadboard.
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3. Teyleten SHT31-D – High Precision Pick
Teyleten Robot SHT31-D SHT31 Temperature Humidity Sensor Module
Humidity 0 to 100 percent
Temperature -40 to 125 Celsius
I2C interface output
Wide 2.4V to 5.5V range
The Teyleten SHT31-D module elevates monitoring quality with industrial-grade precision. Its 4.7 star rating reflects strong performance in maintaining accuracy across wide environmental shifts, making it a top contender for critical applications.
Pros
- Superior humidity accuracy
- Extensive temperature measurement range
- I2C reduces wiring complexity
- 3-pack provides ample quantity
- Fast response time
Cons
- Higher cost than DHT11
- Requires I2C library
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Humidity accuracy reaches within 2 percent RH, significantly better than many budget alternatives. The temperature range spans from freezing cold to hot industrial conditions, offering versatility that basic sensors cannot match.
Using the I2C protocol allows you to connect multiple sensors on the same bus without occupying many digital pins. This feature is crucial for expanding multi-zone monitoring projects efficiently.
Choose this module when accuracy and durability are paramount. The 3-pack offers great value for users needing reliable data across several locations in a greenhouse or smart home setup.
Industrial-Grade Reliability
Built to withstand varied conditions, ensuring consistent output even when placed in challenging environments.
Efficient Multi-Sensor Layout
The I2C interface simplifies wiring for arrays of sensors, saving pins for other project features.
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4. HiLetgo DHT22 – Enhanced Range
HiLetgo 2pcs DHT22/AM2302
Humidity 0 to 100 percent
Temperature -40 to 80 Celsius
Single-bus digital signal
Mounting screw holes
Upgrading from DHT11 to DHT22 brings noticeable improvements in measurement range. The AM2302 sensor chip provides a broader operational envelope suitable for outdoor or industrial environments where temperatures fluctuate widely.
Pros
- Improved temperature range
- Humidity measurement from zero
- Fixed mounting holes
- Replaces older SHT11 models
- Robust AM2302 chip
Cons
- Slower sampling rate than I2C
- 2.3 for complex setups
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Its single-bus digital signal output simplifies integration while maintaining high reliability. The inclusion of fixing screw holes allows for secure installation on enclosures or project panels without additional clamping hardware.
The humidity range extends fully from zero to one hundred percent, covering extreme conditions. This capability ensures accurate readings in very dry or very humid environments where other sensors might struggle.
This module is ideal for advanced hobbyists needing better precision than DHT11 offers. Its balance of performance and cost makes it a popular choice for serious weather station projects.
Secure Installation Features
Screw holes allow permanent mounting, reducing the risk of accidental disconnection during operation.
Wider Environmental Coverage
Operates effectively in temperatures ranging from -40 to 80 degrees Celsius.
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5. Teyleten DHT11 – Bulk Value
Teyleten Robot DHT11
Humidity 20 to 95 percent
Temperature 0 to 50 Celsius
Voltage 3.3V to 5V
Lightweight 8g units
Teyleten Robot offers a solid bulk option with this 5-pack of DHT11 modules. At 4.4 stars, these units deliver consistent digital output for general use cases requiring multiple sensors across different zones.
Pros
- Large quantity for the price
- Ultra-light weight
- Compatible with Raspberry Pi
- Stable calibration
- Simple connection
Cons
- Standard accuracy limits
- Limited low-temperature range
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Weighing only 8 grams each, they add minimal weight to portable projects. This lightweight design is beneficial for drone or wearable applications where every gram counts.
Operating voltage matches standard microcontroller logic levels, ensuring easy integration. The single-wire scheme reduces circuit complexity and keeps wiring neat during development.
This pack is perfect for classrooms or groups where many students need individual kits. The price efficiency makes it easy to replace lost or damaged units quickly without major cost impact.
Portable Project Friendly
Low weight makes these sensors suitable for battery-powered or mobile monitoring devices.
Educational Bulk Supply
Five units provide enough stock for team assignments or large class sessions.
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6. DHT22 Module – Easy Mounting
DHT22 Digital Temperature and Humidity Sensor
Humidity 0 to 100 percent
Temperature -40 to 80 Celsius
215mm connecting wire
Compact 28mm length
This DHT22 module by JTAREA features convenient physical design elements like long connecting wires and mounting holes. Its 4.6 rating indicates strong satisfaction regarding stability and ease of use in home applications.
Pros
- Long connecting wire included
- Mounting screw holes
- High humidity accuracy
- Stable performance
- Ideal for weather stations
Cons
- Limited to 2 units in pack
- Standard speed
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The 215mm wire allows you to position the sensor away from the microcontroller, protecting sensitive electronics from heat or moisture. This separation improves long-term reliability in humid environments.
Humidity accuracy remains within plus or minus 2 percent RH, providing precise data for regulation systems. The bidirectional serial data ensures clean communication between the sensor and your Arduino board.
Consider this option for home appliances or automated humidity regulators where precise physical placement matters. The robust design withstands daily operational demands without significant drift.
Flexible Sensor Placement
The extra wire length lets you place the sensor in optimal spots for accurate reading.
Rugged Build Quality
Designed for continuous operation in home appliances and similar demanding environments.
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7. Teyleten DHT22 – 3 Pack Option
Teyleten Robot DHT22 / AM2302
Humidity 0 to 100 percent
Temperature -40 to 80 Celsius
Single bus digital output
Voltage 3.3V to 5.5V
This 3-pack of DHT22 modules from Teyleten offers a middle ground between DHT11 cost and DHT22 performance. It provides broader range capabilities for projects needing full percent humidity and negative temperature readings.
Pros
- Three units in one box
- Full humidity range support
- Wide voltage tolerance
- Bidirectional data support
- Low price point
Cons
- Lower rated user satisfaction
- Standard response speed
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The wide voltage tolerance allows compatibility with various power sources without voltage regulators. This flexibility simplifies power management in portable or battery-driven projects significantly.
Serial bidirectional port support ensures reliable communication protocols for your microcontroller. The single bus digital output remains consistent with standard wiring conventions used by most hobbyists.
While user ratings vary, the specifications support reliable performance for general tasks. It suits users needing multiple sensors for different rooms without exceeding budget constraints.
Power Supply Flexibility
Operates across a broad voltage spectrum, simplifying power design for mixed-voltage boards.
Multi-Room Monitoring
Three sensors allow simultaneous monitoring in multiple separate zones within a house.
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8. 10-Pack DHT11 – Maximum Quantity
10-Pack DHT11 Humidity Sensor Module
Humidity 20 to 90 percent
Temperature 0 to 50 Celsius
Voltage 3.3V to 5.5V
Includes pull-up resistor
This ten-pack offers the largest volume of sensors among standard retail options. With a 4.6 star rating, users praise its stability and consistent readings over time in varied environments.
Pros
- Largest quantity available
- High user rating
- Wide voltage compatibility
- Stable long-term readings
- Complete documentation
Cons
- Many units may go unused
- Standard accuracy
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The onboard pull-up resistor reduces external components needed for circuit connection. This feature simplifies prototyping and reduces potential points of failure in your wiring setup.
Operating voltage extends to 5.5V allowing safe connection to higher voltage logic systems. This ensures flexibility when working with boards running on varied power rails.
Ideal for bulk production or large workshops where spares are necessary. The comprehensive documentation helps teams train members quickly on installation and programming basics.
Production Ready Supply
Ten units provide ample stock for building multiple devices simultaneously.
Detailed Technical Support
Documentation helps developers troubleshoot connection issues quickly.
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9. 4Pcs DHT22 – Premium Components
4Pcs DHT22/AM2302
Humidity 0 to 100 percent
Temperature -40 to 80 Celsius
Voltage 3.3V to 5.5V
High-quality electronics
This four-pack highlights high-quality electronic components to ensure reliable performance. Users benefit from top-of-the-line construction that supports long-lasting durability in continuous operation modes.
Pros
- Top-line components
- Accurate readings
- Fast response times
- Strong anti-interference
- Compact size
Cons
- Rating below average
- Price may be higher
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The anti-interference capabilities protect against signal noise in electrically noisy environments. This feature is vital for industrial settings where motors or other devices generate interference.
Humidity and temperature precision remain consistent within manufacturer specifications. The fast response time allows for dynamic adjustments in automation systems needing immediate feedback.
Consider this option for critical applications where data integrity is non-negotiable. The compact design fits easily into tight enclosures where space is limited.
Industrial Noise Resistance
Anti-interference design maintains data integrity in environments with electrical noise.
Space-Saving Design
Compact form factor accommodates sensors in tight or restricted mounting areas.
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10. AHT30 – Ultimate Accuracy
2pcs AHT30 High Precision Digital
Humidity 0 to 100 percent
Temperature -40 to 85 Celsius
I2C master output
Resolution 0.01C
The AHT30 delivers top-tier accuracy with a perfect 5.0 star rating. Its upgraded design ensures precise measurements down to 0.01 degrees Celsius, ideal for scientific or high-fidelity monitoring needs.
Pros
- Highest accuracy available
- Perfect 5.0 rating
- Ultra-fine resolution
- Low power consumption
- Stable transmission speed
Cons
- Higher price point
- Requires I2C setup
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Low power consumption extends battery life in portable devices significantly. The I2C master output supports simultaneous access to multiple electronic devices on the same bus efficiently.
Humidity accuracy reaches within 2 percent RH at standard temperature conditions. This stability ensures reliable data for medical or sensitive equipment control systems.
Invest in this module when precision outweighs cost concerns. The robust design and fast transmission speed make it a standout choice for demanding technical applications.
Ultra-Fine Measurement Resolution
Resolution of 0.01C allows detection of minute environmental shifts.
Power Efficiency
Low current draw maximizes operational time for portable devices.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right humidity sensor involves evaluating technical specs against your project needs. This guide breaks down critical factors to help you make an informed decision.
Measurement Accuracy
Accuracy defines how closely the sensor matches true humidity and temperature values. Budget models like DHT11 typically have +/- 5% RH accuracy while premium sensors like AHT30 reach +/- 2% RH. Higher accuracy ensures reliable data for climate control systems.
Prioritize sensors with +/- 2% accuracy for critical applications like greenhouse automation or medical equipment.
Operating Temperature Range
Check the minimum and maximum temperatures your project will encounter. DHT11 works between 0 to 50 Celsius, while DHT22 extends to -40 to 80 Celsius. Industrial environments often require wider ranges.
Choose modules with extended ranges if you plan to use sensors outdoors or in unheated spaces.
Communication Interface
Sensors use either single-wire digital buses or I2C protocols. Single-wire saves power but limits speed. I2C allows multiple devices on one bus but requires more complex code libraries.
Use I2C for projects needing many sensors or high-speed data logging.
Power Supply Requirements
Most modules operate between 3.3V and 5V. Some newer models support wider ranges like 2.4V to 5.5V ensuring compatibility with low-voltage battery systems.
Ensure your sensor matches your microcontroller's logic voltage to avoid damage.
Build Quality and Mounting
Modules with screw holes allow secure mounting which reduces vibration errors. Look for waterproof casings if placing sensors in damp environments.
Select ruggedized versions for outdoor or industrial deployment to ensure long-term stability.
Packaging Quantity
Buying sensors in bulk packs reduces per-unit cost. For large projects or classrooms, 5 or 10 packs offer better value than single units.
Choose multi-packs if you plan to monitor multiple rooms or need spares.
Response Time
Some sensors update readings faster than others. High-speed models allow for rapid feedback in automation loops.
Faster response is essential for active control systems requiring immediate adjustments.
Calibration Needs
Pre-calibrated sensors reduce setup time. Some industrial-grade modules come with factory calibration certificates ensuring accuracy over time.
Buy pre-calibrated models to save setup effort and ensure reliability.
How to Use and Care for Your Arduino Humidity Sensor
Connect the sensor's VCC and GND pins to the corresponding power rails on your Arduino board. Ensure you use the correct voltage level to prevent damaging the sensor.
Install the appropriate software library for your sensor model using the Arduino IDE. For DHT models, use the Adafruit DHT library to simplify reading data.
Avoid placing the sensor near heat sources or direct sunlight as this skews readings. Mount it in a ventilated area to ensure accurate environmental monitoring.
Frequently Asked Questions
What is the difference between DHT11 and DHT22 sensors?
DHT22 offers higher accuracy and a wider temperature range compared to DHT11. While DHT11 costs less, DHT22 is better for outdoor applications needing precise data. Both use single-wire communication.
Can I connect multiple humidity sensors to one Arduino?
Yes, but you need multiple digital pins for DHT sensors. Using I2C sensors like SHT31 allows multiple connections on just two pins. This saves space and wiring complexity.
Why are my humidity readings fluctuating wildly?
Fluctuations often result from electrical noise or loose connections. Adding a pull-up resistor or smoothing software filters can stabilize data. Ensure your power supply is stable too.
Do these sensors require external calibration?
Most hobbyist sensors come factory calibrated and do not require manual setup. However, for professional accuracy you may need to calibrate against a reference instrument regularly.
How long do these sensors last?
With proper care, they last several years. However, prolonged exposure to extreme humidity can degrade the internal elements. Industrial models typically offer longer lifespans.
Which sensor is best for a weather station?
For weather stations, the SHT31 or AHT30 are top choices due to their wide ranges and high accuracy. They withstand outdoor conditions better than basic DHT modules.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
We covered ten distinct options ranging from budget DHT11 modules to premium AHT30 precision units. Each selection offers specific advantages for varying project complexity and precision demands.
Prioritize accuracy and voltage compatibility when making your final decision. Ensure your chosen module supports the environmental conditions of your specific application environment.
Always verify current pricing and availability before purchasing. Market conditions change quickly so checking real-time data ensures you get the best deal today.