2pcs AHT30 High Precision Digital Temperature and Humidity Sensor
5.0Editor score
I2C communication protocol
Low power consumption
Fast transmission speed
In this guide
Finding the right Arduino temperature sensor is essential for any electronics project that requires environmental monitoring. Whether you are building a weather station or controlling a greenhouse, the right hardware ensures accuracy and reliability in your measurements.
We analyzed ten top-rated products available on the market to help you make an informed decision. Our list includes a mix of humidity and temperature sensors, waterproof probes, and high-precision modules designed for various microcontroller platforms.
Each pick shows detailed specifications, pros, and cons based on user feedback and technical data. Please note that prices and availability can change frequently, so check the current links before making your final purchase decision.
Top 3 Picks for Best Arduino Temperature Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
4.5Editor score
Pre-calibrated digital output
Single-wire wiring scheme
Easy integration for projects
DROK 2 Pack Waterproof DS18B20 Temperature Sensor Probes
4.9Editor score
Waterproof stainless steel probe
Wide temperature range
Integrated pull-up resistor
Top 10 Best Arduino Temperature Sensor in 2026 Compared
This side-by-side comparison highlights the key specifications and features of all ten selected products to help you quickly identify the best match for your specific project needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HiLetgo 5pcs DHT11
Temperature Range 0-50 C
Humidity Range 20-90%RH
Voltage 3.3-5.5V
Interface Single-wire Digital
4.5Editor score
Editor's Choice
2pcs AHT30 High Precision
Temperature Range -40 to85 C
Humidity Range 0-100%RH
Voltage 2.0-5.5V
Interface I2C Communication
5.0Editor score
Best Premium
Teyleten Robot SHT31-D
Temperature Range -40-125 C
Humidity Range 0-100%RH
Voltage 2.4-5.5V
Interface I2C Output
4.7Editor score
Gikfun 1M DS18B20
Temperature Range -55-125 C
Waterproof Probe Included
Voltage 3.3-5V
Interface 1-Wire Digital
4.4Editor score
WWZMDiB 5 Pcs DS18B20
Temperature Range -55-125 C
Waterproof Equipped
Voltage 3-5.25V
Interface Single Bus
4.4Editor score
2pcs DHT11 Temperature Humidity
Temperature Range 0-50 C
Humidity Range 20-95%
Voltage 3.3-5V
Interface Digital Output
4.3Editor score
DROK 2 Pack Waterproof DS18B20
Temperature Range -55-125 C
Stainless Steel Probe
Voltage 3.0-5.5V
Interface 1-Wire Protocol
4.9Editor score
Gikfun 5PCS 1M DS18B20
Temperature Range -55-125 C
Cable Length 100cm
Voltage 3.0-5.5V
Interface Single Bus
4.5Editor score
HiLetgo 2pcs DHT22/AM2302
Temperature Range -40-80 C
Humidity Range 0-100%RH
Voltage 3.3-5V
Interface Bidirectional Serial
4.4Editor score
HiLetgo 5pcs DS18B20
Temperature Range -55-125 C
Stainless Steel Package
Voltage 3.0-5.5V
Interface Single Bus
4.5Editor score
1. HiLetgo DHT11 – Best Overall Arduino Temperature Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
Power Supply 3.3-5.5V
Temp Range 0-50 C
Humidity Range 20-90%RH
Resolution 1 C or 1%
The HiLetgo DHT11 module offers a reliable solution for basic temperature and humidity monitoring projects. With a strong rating from users, it provides a pre-calibrated digital output that simplifies integration with Arduino boards.
Pros
- Pre-calibrated digital output
- Single-wire wiring simplicity
- Includes wires for quick start
- Interchangeable modules in pack
Cons
- Limited temperature range
- Resolution not very high
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Its single-wire wiring scheme significantly reduces the complexity of connecting the sensor to your microcontroller. The included wires allow you to start prototyping immediately without needing extra components for connection.
While the temperature range is limited compared to industrial sensors, it covers most indoor environments effectively. The moderate resolution is acceptable for general hobbyist applications where extreme precision is not critical.
This module is ideal for beginners who need a straightforward and cost-effective way to measure environmental conditions. Its ease of use and included accessories make it a top recommendation for general DIY projects.
Easy Integration for Beginners
The simple communication protocol reduces programming effort, allowing users to focus on the project logic rather than complex setup.
Versatile Indoor Monitoring
Suitable for indoor applications like home weather stations or simple climate control systems requiring basic humidity and temperature data.
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2. AHT30 Sensor – Best Budget Choice
2pcs AHT30 High Precision Digital Temperature and Humidity Sensor
Power Supply 2.0-5.5V
Temp Range -40 to85 C
Humidity Range 0-100%RH
Resolution 0.01 C
The AHT30 sensor delivers high precision digital temperature and humidity measurements suitable for advanced projects. Users praise its accuracy and stability, making it a strong contender for applications requiring detailed data.
Pros
- High precision measurements
- I2C communication support
- Very low power consumption
- Stable fast transmission speed
Cons
- Requires I2C wiring setup
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Its I2C master output allows simultaneous online access to multiple devices, enhancing flexibility in complex setups. The low power consumption ensures it is efficient for battery-powered applications without draining energy quickly.
The stable and fast transmission speed ensures that data is processed quickly, which is crucial for real-time monitoring systems. The 4P test line connection design makes it convenient for users to use it quickly.
This sensor is perfect for those looking for a balance between performance and cost. Its wide voltage range and high accuracy make it suitable for both educational and professional environmental monitoring tasks.
Advanced Data Accuracy
With a temperature accuracy of ±0.3°C, it provides detailed readings that support more precise control and analysis in your projects.
Flexible Power Options
The supply voltage range of 2.0V to 5.5V allows easy adaptation to various microcontroller setups without additional voltage regulation.
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3. DROK DS18B20 – Best Premium Waterproof Solution
DROK 2 Pack Waterproof DS18B20 Temperature Sensor Probes
Temp Range -55 to125 C
Accuracy ±0.5 C
Waterproof Stainless Steel
Voltage 3.0-5.5V
The DROK DS18B20 package offers a robust solution for projects requiring waterproof temperature monitoring. Its stainless steel probe ensures durability in wet environments, making it ideal for liquid temperature checks.
Pros
- Waterproof corrosion resistant probe
- Integrated pull-up resistor
- Wide temperature operating range
- Includes jumper wires and resistors
Cons
- Requires careful handling of wires
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High accuracy readings are delivered across a wide temperature range, satisfying demanding applications like industrial systems or aquariums. The adapter board features an integrated pull-up resistor, simplifying the connection process significantly.
Clear wire separation with heat shrink tubing aids in quick and error-free integration. The included jumper wires and resistors make this a complete kit that reduces the need for additional purchases.
This product is best for users who need a reliable and durable sensor for harsh conditions. Its complete package and ease of use make it a top choice for professional or heavy-duty DIY applications.
Durability in Harsh Conditions
The waterproof stainless steel casing protects the sensor from corrosion and rust, ensuring long-term reliability in moist environments.
Simplified Integration
The 1-Wire interface and included adapter board streamline the connection process, reducing the need for complex external components.
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4. Teyleten SHT31 – High Accuracy I2C Sensor
Teyleten Robot SHT31-D Temperature Humidity Sensor
Voltage 2.4-5.5V
Temp Range -40 to125 C
Humidity Range 0-100%RH
Accuracy ±0.3 C
The Teyleten SHT31-D module provides high accuracy for both temperature and humidity measurements. With a wide voltage range, it is compatible with a variety of microcontrollers without extra circuitry.
Pros
- Wide voltage operating range
- High temperature accuracy
- I2C interface support
- Includes three modules in pack
Cons
- Slightly higher price point
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Its temperature accuracy of ±0.3°C ensures reliable readings in critical applications. The I2C interface output allows for efficient communication with your controller, saving pins on your board.
The package includes three modules, offering value for users needing multiple sensors for distributed monitoring. This quantity is useful for projects requiring environmental checks in several different locations.
This sensor is well-suited for projects that demand precise data and flexible power options. Its robust build and accuracy make it a reliable choice for advanced environmental monitoring setups.
Precision Environmental Data
The high measurement accuracy ensures that even small changes in temperature or humidity are detected reliably.
Multi-Sensor Value
Receiving three modules in a pack provides excellent value for larger projects that require monitoring across multiple zones.
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5. Gikfun DS18B20 – Reliable Waterproof Pack
Gikfun 1M DS18B20 Waterproof Digital Temperature Sensor
Voltage 3.3-5V
Temp Range -55 to125 C
Lead Length 1 meter
Adapter Module Included
The Gikfun DS18B20 sensor features a waterproof design ideal for use in wet or moist environments. Its pluggable probe makes it easy to connect and use in various settings without soldering.
Pros
- Pluggable probe design
- Includes adapter modules
- Wide temperature range
- Uses 1-Wire protocol
Cons
- Lead temperature limit noted
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Each set includes an adapter module that allows direct connection to microcontrollers, simplifying the wiring process. This setup is widely used in temperature monitoring for fish tanks, equipment, and greenhouses.
The wide operating temperature range ensures that the sensor can function effectively in extreme conditions. The adapter module includes a pull-up resistor, further reducing the complexity of installation.
This product is perfect for users needing durable sensors for industrial or consumer monitoring tasks. Its complete kit and straightforward integration make it a strong option for practical temperature monitoring.
Simple Connection Process
The adapter module allows for direct connections to microcontrollers, removing the need for complex external wiring setups.
Industrial Applications
Suitable for industrial systems and consumer products where reliable temperature data is essential for safety and efficiency.
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6. WWZMDiB DS18B20 – Great Value for Bulk
WWZMDiB 5 Pcs DS18B20 Temperature Sensor Probe
Voltage 3-5.25V
Temp Range -55 to125 C
Accuracy ±0.5 C
Includes 4.7K resistors
The WWZMDiB DS18B20 sensor is designed for underwater use and can operate reliably in wet conditions. Its high accuracy ensures that temperature readings are precise enough for critical applications.
Pros
- High accuracy waterproof probe
- Includes required resistors
- Compatible with multiple boards
- Bulk pack value
Cons
- Basic packaging
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The kit includes five 4.7K resistors, which are necessary for the 1-Wire interface to function correctly. This inclusion adds significant value as users do not need to purchase resistors separately.
Compatibility with Arduino, Raspberry Pi, and ESP32 makes it versatile for various microcontroller platforms. The wiring is color-coded for easy identification, reducing the risk of connection errors.
This sensor is an excellent choice for those planning multiple projects or needing spare sensors. Its durability and included accessories make it a practical option for DIY enthusiasts and professionals alike.
Essential Accessories Included
By providing the necessary resistors, the kit simplifies the setup process and ensures the sensor works out of the box.
Wide Platform Compatibility
Compatible with popular microcontrollers, ensuring that you can use it with your existing hardware without compatibility issues.
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7. DHT11 Sensor – Entry Level Digital Module
2pcs DHT11 Temperature Humidity Sensor Module
Voltage 3.3-5V
Temp Range 0-50 C
Humidity Range 20-95%
Digital Output
The DHT11 digital sensor provides a reliable and straightforward way to monitor temperature and humidity. Its single-wire wiring scheme makes it easy to integrate into other applications quickly.
Pros
- Low cost option
- Includes connecting wires
- Simple digital signal
- Compatible with Raspberry Pi
Cons
- Moderate accuracy
- Limited range
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With a high-performance microcontroller connected internally, the sensor ensures high reliability and stable measurements over time. The simple communication protocol reduces the programming effort required for users.
The package includes wires for immediate use, which is convenient for beginners. Its compatibility with Arduino and Raspberry Pi expands its utility across different development platforms.
This module is ideal for basic indoor projects where high precision is not required. Its simplicity and included components make it a solid starting point for learning about environmental sensors.
Beginner Friendly Design
The simple protocol and included wires make it an excellent choice for those new to electronics and sensor integration.
Multi-Platform Use
Compatible with both Arduino and Raspberry Pi, allowing it to fit into a wide range of existing project setups.
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8. Gikfun DS18B20 – Durable Long Wire Pack
Gikfun 5PCS 1M DS18B20 Temperature Sensor
Voltage 3.0-5.5V
Cable Length 100 cm
Temp Range -55 to125 C
5 Probes Included
This package provides five waterproof digital temperature probes with a significant cable length of one meter each. This length allows for remote monitoring where the sensor needs to be placed far from the controller.
Pros
- Long 1 meter cable
- Pack of five probes
- Waterproof digital probe
- Easy single bus interface
Cons
- No adapter module in pack
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The single bus interface is unique and simplifies the connections, as no other components are required beyond a pull-up resistor. This design supports applications like thermostatic controls and industrial systems.
The waterproof nature of the probes ensures they can be used in various environments without damage. The power supply range supports flexible voltage options for different microcontroller boards.
This product is perfect for distributed monitoring systems where multiple points need to be checked. Its long cables and robust probes make it suitable for large scale industrial or agricultural projects.
Remote Monitoring Capability
The 100 cm cable length allows placement in hard-to-reach areas while keeping the microcontroller safely in one location.
Minimal Setup Required
The unique single bus interface reduces the need for complex wiring or additional modules beyond a simple resistor.
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9. DHT22 Sensor – Enhanced Range Version
HiLetgo 2pcs DHT22/AM2302 Digital Temperature and Humidity Sensor
Temp Range -40 to80 C
Humidity Range 0-100%RH
Accuracy ±0.5 C
Chip AM2302
The DHT22 module features a high sensitive temperature humidity sensor that offers a wider operating range than the DHT11. This makes it suitable for environments that require more flexibility in temperature readings.
Pros
- Wider temperature range
- High sensitivity chip
- Bidirectional serial data
- Includes fixing screw hole
Cons
- Slightly higher cost
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Its bidirectional serial data output ensures reliable communication with microcontrollers, maintaining a calibrated connection for accurate measurements. The module includes a fixing screw hole for convenient installation and fixing.
The temperature measurement accuracy of ±0.5°C is better than standard hobby sensors, providing more detailed data for projects. It is an excellent upgrade for electronic practice and advanced DIY applications.
This sensor is ideal for users who need better precision and a wider range than the basic DHT11 provides. Its improved specs make it a reliable choice for weather stations and climate monitoring.
Improved Temperature Range
The wider range of -40 to 80 degrees Celsius allows for monitoring in more diverse and challenging environments.
Better Precision
The ±0.5°C accuracy offers more reliable data compared to lower-end sensors, ensuring better project results.
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10. HiLetgo DS18B20 – Stainless Steel Waterproof Kit
HiLetgo 5pcs DS18B20 Temperature Sensor
Voltage 3.0-5.5V
Pack of 5 probes
Stainless Steel Package
Cable Length 1 meter
This pack includes five waterproof temperature probes with a stainless steel package that protects the sensor during use. The 1-meter cable allows for flexible placement in various monitoring scenarios.
Pros
- Stainless steel protection
- Five probes included
- Waterproof design
- Wide temperature range
Cons
- Requires 4.7K resistor
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The wide temperature range of -55 to 125 degrees Celsius ensures reliability in extreme conditions. It is a robust option for industrial systems and consumer products requiring thermal safety.
Using a 4.7K resistor between data and VCC makes testing easier and improves stability during operation. This feature simplifies the setup process for users who want to ensure accurate readings.
This product is well-suited for bulk projects where multiple waterproof sensors are needed. Its durable construction and included quantity make it a cost-effective solution for professional monitoring tasks.
Bulk Value
Receiving five probes in a single pack offers significant value for projects requiring multiple sensors across different locations.
Rugged Durability
The stainless steel casing ensures the sensors can withstand physical impacts and harsh environments.
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Buying Guide – How to Choose the Best Arduino Temperature Sensor
Selecting the right sensor involves considering several technical factors to ensure your project functions reliably and meets your specific environmental monitoring needs.
Temperature Range Requirements
Different sensors support different temperature ranges. Industrial-grade sensors often support ranges from -55°C to 125°C, while basic hobby sensors might be limited to 0°C to 50°C. Choose one that covers the extremes of your environment.
Always verify the operating range matches your project needs to avoid sensor failure in extreme conditions.
Communication Interface
Sensors use various interfaces like Single-wire, I2C, or Digital Output. I2C is efficient for multiple devices, while Single-wire like DS18B20 saves pins. Ensure your microcontroller supports the interface protocol.
Select the interface that balances pin usage and speed requirements for your specific setup.
Accuracy and Resolution
High-precision sensors provide accuracy of ±0.3°C, which is crucial for scientific or climate control projects. Lower resolution sensors may suffice for general indoor monitoring where exact precision is not vital.
Prioritize accuracy if your project relies on small temperature changes for decision making.
Waterproof and Durability
If your sensor will be exposed to moisture or liquid, waterproof stainless steel probes are essential. Models like the DS18B20 offer waterproofing suitable for aquariums or outdoor use.
Check for waterproof ratings if your project involves humid or wet environments.
Voltage Compatibility
Most sensors operate between 3.3V and 5.5V, but some advanced modules support wider ranges. Ensure the sensor voltage matches your Arduino board to prevent damage or inaccurate readings.
Always check the power supply requirements before wiring the sensor to your board.
Included Accessories
Some packages include necessary resistors or jumper wires, which simplifies the setup process. Others require you to source these components separately. Kits with accessories save time and money.
Look for complete kits that include all necessary components for immediate use.
Mounting and Form Factor
The physical size and mounting options like screw holes affect installation. Compact modules are better for tight spaces, while larger modules might be easier to install in industrial setups.
Choose a form factor that fits the physical constraints of your project enclosure.
Cost and Quantity
Packs of sensors offer better value if you need multiple units. While individual sensors cost less, bulk packs often reduce the price per unit significantly.
Assess your quantity needs to decide between buying individual sensors or a bulk pack.
How to Use and Care for Your Arduino Temperature Sensor
Begin by connecting the sensor pins to your Arduino board according to the manufacturer's documentation. Ensure that you connect VCC, GND, and the data pin correctly to avoid damaging the module.
Install the necessary library for your specific sensor model in the Arduino IDE to simplify coding. Libraries like DHT sensor library or DallasTemperature simplify the process of reading data.
Regularly check the connections to ensure they remain secure, especially for outdoor or vibration-prone projects. Proper maintenance ensures the longevity and accuracy of your monitoring system.
Frequently Asked Questions
Which sensor is best for indoor temperature monitoring?
The DHT11 or DHT22 sensors are excellent choices for indoor monitoring due to their affordability and ease of use. They provide sufficient accuracy for room temperature checks and are widely supported by libraries.
Do I need an external resistor for DS18B20?
Yes, the DS18B20 typically requires a 4.7K pull-up resistor between the data line and VCC for stable communication. However, some adapter boards include this resistor internally to simplify wiring.
What is the difference between I2C and Single-wire sensors?
I2C sensors like AHT30 use two wires (data and clock) and can connect multiple devices on the same bus. Single-wire sensors like DS18B20 use only one data line and are easier to use for long-distance monitoring.
Can these sensors measure outside temperature?
Yes, waterproof sensors like the DS18B20 can be used outdoors. Ensure they are placed in a sheltered location to avoid direct sunlight, which can affect reading accuracy.
How do I calibrate my temperature sensor?
Most digital sensors are pre-calibrated, but if calibration is needed, compare readings with a reference thermometer and adjust your code offsets accordingly. Some libraries support calibration adjustments directly.
Which sensor has the widest temperature range?
The DS18B20 and SHT31 offer wide temperature ranges from -55°C to 125°C. These are ideal for projects exposed to extreme cold or heat compared to basic DHT11 sensors.
Final Thoughts on Choosing the Best Arduino Temperature Sensor
We have reviewed ten top products to help you select the right sensor for your project. The HiLetgo DHT11, AHT30, and DROK DS18B20 stand out for their balance of features and reliability.
When choosing, prioritize accuracy and durability based on your specific environment. Waterproof options are best for liquid monitoring, while high precision sensors suit scientific applications.
Remember to verify current pricing and availability before purchasing as these details can change. Select the option that fits your budget and technical requirements for the best project outcome.