HiLetgo 2pcs DHT11 Temperature Humidity Sensor Module
4.3Editor score
Cost-effective dual pack
Simple integration ready
Stable long term output
In this guide
Selecting the right temperature sensor is crucial for any Arduino project requiring environmental monitoring. Whether you need simple humidity tracking or precise industrial readings, the right module ensures reliable data collection and system stability for your applications.
We analyzed ten highly rated sensors based on accuracy, ease of use, and connectivity options. Our comparison includes digital humidity sensors, waterproof probes, and high-precision modules suitable for diverse DIY and professional electronics projects.
Each pick highlights key strengths and limitations to guide your decision. While ratings and availability shift over time, these models represent the current best value and performance available for integrating temperature sensing into your Arduino workflow today.
Top 3 Picks for Best Arduino Temperature Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
4.5Editor score
Single-wire digital output
Built-in pull-up resistor
3.3V to 5.5V supply
Gikfun 2pcs AHT30 High Precision Digital Temperature Humidity Sensor Module
5.0Editor score
High precision I2C output
Wide voltage range support
Fast stable transmission
Top 10 Best Arduino Temperature Sensor in 2026 Compared
This section offers a side-by-side comparison of all ten selected sensors. We highlight core specifications and unique features to help you quickly identify the model that fits your specific project requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HiLetgo DHT11 5pcs
Range 0 to 50C
Accuracy 2 degrees C
Interface Single wire digital
4.5Editor score
Editor's Choice
HiLetgo AHT30 2pcs
Range -40 to 85C
Accuracy 0.3 degrees C
Interface I2C communication
5.0Editor score
Best Premium
Teyleten Robot SHT31 3pcs
Range -40 to 125C
Accuracy 0.3 degrees C
Interface I2C output
4.7Editor score
Gikfun DS18B20 3 Sets
Range -55 to 125C
Waterproof probe included
Interface 1-Wire protocol
4.4Editor score
WWZMDiB DS18B20 5pcs
Range -55 to 125C
Includes 4.7K resistors
Waterproof stainless steel
4.4Editor score
HiLetgo DHT11 2pcs
Range 0 to 50C
Accuracy 2 degrees C
Digital signal output
4.3Editor score
DROK DS18B20 2 Pack
Range -55 to 125C
Stainless steel probe
Includes adapter boards
4.9Editor score
Gikfun DS18B20 5pcs
Range -55 to 125C
1 meter cable length
Unique single bus
4.5Editor score
HiLetgo DHT22 2pcs
Range -40 to 80C
Accuracy 0.5 degrees C
AM2302 chip
4.4Editor score
HiLetgo DS18B20 5pcs
Range -55 to 125C
Stainless steel package
1 meter length
4.5Editor score
1. HiLetgo DHT11 – Best Overall Budget Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
0 to 50 Celsius range
Single-wire digital output
Bypass capacitor included
5 piece pack size
The HiLetgo DHT11 kit stands out as a top choice for beginners needing reliable temperature and humidity readings. It holds a strong 4.5 star rating and delivers consistent digital output through a simple single-wire interface.
Pros
- Includes five modules for bulk projects
- Simple single-wire connection scheme
- Built-in pull-up resistor saves parts
- Low cost per unit value
- Wide voltage support
Cons
- Limited temperature range to 50C
- Lower humidity accuracy than high-end models
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Each module comes pre-equipped with a bypass capacitor and pull-up resistor, reducing external components. The 3.3V to 5V supply range ensures compatibility with most microcontrollers. The single bus digital signal minimizes pin usage.
Trade-offs include a temperature limit of 50 Celsius and lower humidity accuracy compared to premium sensors. These are acceptable for indoor monitoring where extreme conditions are unlikely. The 5 piece pack ensures spares are available.
This kit is ideal for hobbyists or classrooms requiring multiple units. It offers excellent value and simplicity for standard environmental monitoring projects. We recommend it for general purpose Arduino applications.
Simplified Wiring and Integration
The single-wire scheme allows connection to any microcontroller IO port with minimal effort.
Bulk Value and Stability
Long-term stability and full interchangeability make this kit reliable for large scale deployments.
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2. HiLetgo AHT30 – Best High Precision Model
HiLetgo AHT30 High Precision Digital Temperature Humidity Sensor Module
I2C master output
0.3 Celsius accuracy
-40 to 85C range
Voltage 2.0 to 5.5V
The AHT30 module delivers exceptional precision with a perfect 5.0 star rating. It supports I2C communication for simultaneous access to multiple devices, making it suitable for complex projects.
Pros
- Excellent 5.0 star rating
- High precision I2C communication
- Wide voltage range 2.0 to 5.5V
- Supports simultaneous device access
- Low power consumption
Cons
- Requires I2C bus setup
- Fewer units per pack
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Its accuracy reaches 0.3 Celsius, far exceeding standard DHT sensors. The wide voltage range allows direct connection to varied power sources. Fast transmission speed ensures responsive data updates.
While setup requires I2C configuration, the benefit of high precision justifies this. Users must manage bus addresses when chaining multiple modules. The 4P test line simplifies initial connections.
This sensor is best for projects demanding strict measurement accuracy. It outperforms budget options in stable environments. We recommend it for scientific or industrial prototypes.
Superior Accuracy
Achieve precise readings with 0.3 Celsius temperature accuracy and 2 percent humidity accuracy.
Flexible Power
Operate across 2.0V to 5.5V without needing external regulators.
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3. Teyleten SHT31 – Best Wide Range Model
Teyleten Robot SHT31-D SHT31 Temperature Humidity Sensor Module
I2C interface output
-40 to 125C range
0.3 Celsius accuracy
2.4 to 5.5V DC
The Teyleten SHT31 offers wide range performance with a 4.7 rating. Its temperature span from -40 to 125 Celsius suits extreme environments. I2C output simplifies circuit design.
Pros
- Extensive temperature coverage
- High accuracy for humidity
- I2C output for easy wiring
- Stable voltage operation
- 3 piece pack
Cons
- Slightly higher cost
- I2C bus required
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Accuracy remains tight at 0.3 Celsius and 2 percent humidity. The wide voltage range ensures reliable operation across different Arduino boards. This sensor delivers consistent readings in harsh conditions.
The requirement for I2C may deter absolute beginners but is standard for advanced users. The trade-off for precision and range is minimal. Stability is excellent over time.
Select this module for industrial or outdoor monitoring. It handles temperature extremes better than standard sensors. We recommend it for long term monitoring.
Extreme Temperature Capability
Monitor conditions from -40 to 125 Celsius with consistent precision.
Digital Communication
Use I2C for efficient data transfer and easy multi-device setups.
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4. Gikfun DS18B20 – Best Waterproof Probe
Gikfun DS18B20 Waterproof Digital Temperature Sensor
1 meter waterproof lead
55 to 125C range
Pull-up resistor on board
Three sets included
This Gikfun kit provides three waterproof temperature sensors with adapters. It holds a 4.4 rating and is designed for continuous monitoring in moisture-prone areas. The pull-up resistor is onboard for convenience.
Pros
- Waterproof for wet environments
- Adapter module included
- Wide temperature range
- Single-bus interface
- 3 sets per pack
Cons
- Leads limited to 85C
- External resistor suggested
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The sensor supports -55 to 125 Celsius readings. Wiring is straightforward with labeled leads. The adapter allows direct connection to microcontrollers. This design speeds up installation.
The leads themselves cannot withstand temperatures above 85 degrees Celsius. Users should ensure probe placement avoids extreme heat. This is a minor limitation for most aquarium or greenhouse uses.
Ideal for water tanks or HVAC systems. It offers reliable readings in wet conditions. We recommend it for temperature monitoring requiring waterproofing.
Waterproof Reliability
Submerge the probe safely in liquids without risk of damage.
Plug and Play
The adapter module connects directly to microcontroller GPIO pins.
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5. WWZMDiB DS18B20 – Best Value Pack
WWZMDiB DS18B20 Temperature Sensor Probe
5 pack with resistors
Waterproof stainless steel
3 to 5.25V supply
-55 to 125C range
The WWZMDiB kit includes five sensors and matching resistors. It offers a 4.4 rating and excellent value for bulk DIY projects. The stainless steel probes resist corrosion effectively.
Pros
- Includes resistors for wiring
- 5 sensors per pack
- Stainless steel probe
- Wide voltage support
- High accuracy ±0.5C
Cons
- Requires 1-Wire library
- Longer cable time
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Operating range spans -55 to 125 Celsius. Each probe provides ±0.5°C accuracy. The 3 to 5.25V supply ensures compatibility with most boards. This simplifies power wiring.
Users must install a 4.7K resistor between data and VCC. The kit includes these for convenience. Setup is simple once wiring is understood.
Choose this for large projects requiring multiple probes. It ensures cost efficiency and durability. We recommend it for extensive temperature mapping.
Complete Kit
Receive all necessary resistors and probes for immediate deployment.
Robust Design
Stainless steel casing protects the sensor from environmental wear.
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6. HiLetgo DHT11 – Best Budget Starter Pack
HiLetgo 2pcs DHT11 Temperature Humidity Sensor Module
2 piece pack
20 to 95% humidity
0 to 50C range
Digital signal output
This HiLetgo kit offers two DHT11 sensors at minimal cost. It carries a 4.3 rating and is ideal for simple temperature and humidity projects. The wiring is straightforward for beginners.
Pros
- Most affordable option
- Compact footprint
- Simple wiring
- Dual package value
- Reliable basic readings
Cons
- Limited humidity range
- Standard accuracy
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Humidity measures between 20 and 95 percent. Temperature covers 0 to 50 Celsius. Digital output ensures noise resistance. This is sufficient for general indoor use.
Accuracy is lower than precision sensors but acceptable for hobby projects. The cost per unit is extremely low. Users should verify compatibility with their code libraries.
Best for students or first-time builders. It provides essential functionality without complexity. We recommend it for introductory sensor experiments.
Entry-Level Access
Start learning sensors without investing in expensive hardware.
Basic Performance
Achieve consistent readings for everyday environmental checks.
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7. DROK DS18B20 – Best Kit Convenience
DROK DS18B20 Waterproof Temperature Sensor
2 adapter boards included
Stainless steel probes
Jumper wires included
4.7K resistors included
The DROK kit includes boards, wires, and resistors. It holds a 4.9 rating and simplifies setup significantly. The stainless steel probes handle continuous submersion.
Pros
- Comprehensive accessory pack
- Excellent 4.9 rating
- High accuracy ±0.5C
- Simple wiring guide
- Stable voltage operation
Cons
- Only two probes
- Resistor required
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Accuracy is ±0.5°C across a wide temperature range. Heat shrink tubing protects wires from damage. The adapter allows direct Raspberry Pi GPIO connection.
Users may need additional probes for large projects. The included resistor ensures stable 1-Wire communication. This reduces component hunting.
Perfect for users wanting a complete solution. It ensures immediate functionality. We recommend it for quick prototyping.
Complete Accessory Kit
Receive all necessary wires and boards for instant deployment.
Durable Probes
Stainless steel construction resists corrosion in harsh environments.
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8. Gikfun DS18B20 – Best Bulk Waterproof Kit
Gikfun 5PCS 1M DS18B20 Temperature Sensor
5 piece pack
100 cm cable length
Waterproof thermal probe
Unique single bus
This Gikfun kit provides five 1-meter waterproof probes. It holds a 4.5 rating and is excellent for distributed temperature sensing. The long cables suit remote locations.
Pros
- Five probes per pack
- Long 1 meter cable
- Waterproof design
- Low cost per unit
- Simple single bus
Cons
- Cable bulk for small projects
- Resistor needed
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Each probe operates on 3 to 5.5V. Unique single bus interface reduces pin usage. This design supports multiple sensors on one line.
The length may be excessive for small PCB projects. Users should use heat shrink for cable protection. Resistor inclusion varies by batch.
Ideal for large scale monitoring or multiple locations. It offers high quantity and affordability. We recommend it for networked sensor arrays.
Extended Reach
Monitor remote areas with 100cm cable length.
Single Bus Design
Connect multiple probes using a single digital data line.
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9. HiLetgo DHT22 – Best Mid-Range Sensor
HiLetgo DHT22 AM2302 Digital Temperature Humidity Sensor
AM2302 high sensitive chip
0 to 100% humidity
-40 to 80C range
0.5C temperature accuracy
The DHT22 kit offers upgraded performance over the DHT11. It holds a 4.4 rating. The AM2302 chip improves sensitivity and accuracy significantly.
Pros
- Better accuracy than DHT11
- Full humidity range 0 to 100
- Fixed screw holes
- Single-bus digital output
- Wider temp range
Cons
- Slightly higher cost
- Less common library
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Temperature spans -40 to 80 Celsius. Humidity covers 0 to 100 percent. Accuracy reaches ±0.5°C. Fixed screw holes simplify mounting.
Cost is slightly higher than basic modules. Libraries are well supported. This sensor handles a wider range of environments.
Ideal for HVAC or greenhouse monitoring. It balances price and precision. We recommend it for improved accuracy without premium cost.
Improved Sensitivity
Detect subtle environmental changes with higher chip sensitivity.
Secure Mounting
Use screw holes to fix the module to your enclosure.
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10. HiLetgo DS18B20 – Best Basic Waterproof Pack
HiLetgo DS18B20 Temperature Sensor Probe
Stainless steel package
5 pack quantity
1 meter cable
Waterproof design
This kit provides five stainless steel waterproof sensors. It holds a 4.5 rating and offers reliable performance for wet environments. The cables are 1 meter long.
Pros
- Five waterproof probes
- Stainless steel build
- Wide temp range
- Low cost
- Easy single bus
Cons
- No resistor included
- Cable storage needed
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Temperature range spans -55 to 125 Celsius. Wiring uses standard red yellow black leads. This ensures compatibility with most adapters.
Resistors must be sourced separately for 1-Wire stability. This adds a small cost. The steel package ensures longevity.
Suitable for industrial or aquarium monitoring. It provides bulk value and durability. We recommend it for robust temperature sensing.
High Temperature Resilience
Operate safely in ranges up to 125 Celsius.
Simple Wiring
Connect using standard VCC Data GND leads.
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Buying Guide – How to Choose the Best Arduino Temperature Sensor
Selecting the right sensor depends on environmental conditions and required precision. Below are key factors to consider.
Temperature Range
Ensure the sensor covers your expected operating environment. Some modules handle -40 to 125 Celsius, while others stop at 50.
Choose wide-range sensors for industrial or outdoor projects.
Accuracy Requirements
High precision applications need sensors with ±0.3 to ±0.5 accuracy. Standard models may vary by 2 degrees.
Prioritize accuracy for scientific or HVAC monitoring.
Communication Protocol
Digital sensors like DHT11 use single-wire buses. Others use I2C for faster data. Select based on your board pins.
Single-wire saves pins; I2C improves speed.
Waterproof Needs
For wet environments, select waterproof probes like DS18B20. Standard modules are not submersible.
Use waterproof models for aquariums or outdoor weather stations.
Voltage Compatibility
Confirm the sensor supports your Arduino voltage level. Most support 3.3V to 5V, but some require specific ranges.
Mismatched voltage may damage components.
Mounting and Installation
Some modules include screw holes or adapters. Others need external resistors. Check packaging for included accessories.
Included adapters reduce setup time and cost.
Pack Quantity
Kits often include multiple units or resistors. Buying in bulk saves money for large projects.
Select packs that match your project scale.
Library Support
Ensure Arduino libraries exist for your chosen sensor. Popular types have well-documented code.
Check community support before purchasing.
How to Use and Care for Your Arduino Temperature Sensor
Connect the sensor to your Arduino board using appropriate pins. For digital sensors, link data, VCC, and GND to matching Arduino terminals.
Install the required library in the Arduino IDE to enable communication. Upload a basic test script to verify readings.
Avoid submerging non-waterproof models. For waterproof probes, seal all connections to prevent corrosion in wet environments.
Frequently Asked Questions
Which Arduino temperature sensor is best for beginners?
The DHT11 is ideal for beginners due to its simple single-wire setup. It works reliably with standard Arduino boards and requires no external components.
Can these sensors measure both temperature and humidity?
Digital models like DHT11 and DHT22 measure both. Probes like DS18B20 measure temperature only. Check specifications for combined capabilities.
How do I calibrate my Arduino temperature sensor?
Calibration requires comparing readings against a trusted thermometer. Adjust code offsets based on the difference to improve accuracy.
Are these sensors waterproof?
DS18B20 probes are waterproof and suitable for liquids. DHT11 modules are not submersible and should stay dry.
What voltage do Arduino temperature sensors use?
Most sensors operate between 3.3V and 5V. Verify your Arduino board output before connection to prevent damage.
Do I need a pull-up resistor for digital sensors?
DHT modules usually include one. DS18B20 requires a 4.7K resistor unless the adapter provides it.
How many sensors can connect to one Arduino?
DS18B20 allows multiple on a single pin. DHT modules require separate pins for each. Check board limits.
What is the typical accuracy of these sensors?
Digital sensors range from ±0.3 to ±2 degrees Celsius. Higher accuracy models cost more but suit precision needs.
Final Thoughts on Choosing the Best Arduino Temperature Sensor
This guide highlights top sensors for diverse projects. DHT11 offers budget value while AHT30 and SHT31 provide precision.
Prioritize waterproof features for wet environments. Digital sensors like DS18B20 offer durability and wide range.
Verify current availability and prices before ordering. Selections may vary by vendor.