HiLetgo 5pcs DHT11
4.5Editor score
Single wire digital output
Wide voltage range 3.3 to 5V
Affordable bulk pack option
In this guide
Finding the right Arduino temperature sensor is essential for any electronics project involving environmental monitoring or climate control. Whether you are building a smart home device or a simple weather station, choosing the correct module ensures accurate data collection and reliable performance over time.
We evaluated ten highly rated sensors based on accuracy, ease of use, connectivity options, and durability. Our comparison covers digital and analog options, waterproof probes for industrial use, and high precision modules suitable for scientific applications requiring detailed environmental tracking capabilities.
Each pick highlights key specifications and real world performance traits to help you make an informed decision for your specific build. Please note that prices and availability change frequently so always verify current listings before purchasing components for your next Arduino development project.
Top 3 Picks for Best Arduino Temperature Sensor
Teyleten Robot SHT31-D
4.7Editor score
High precision I2C interface
Wide operating temperature range
Superior humidity accuracy specs
DROK 2 Pack Waterproof DS18B20
4.9Editor score
Stainless steel waterproof probe
Includes adapter board and resistors
Wide voltage and range support
Top 10 Best Arduino Temperature Sensor in 2026 Compared
The following table provides a side by side comparison of all ten selected temperature sensors for Arduino projects. Each entry includes key specifications such as measurement range, communication protocol, and special features to help you quickly identify the best fit for your needs.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo DHT11 5pcs
DHT11 sensor
Single wire digital
0 to 50C
20 to 95% RH
4.5Editor score
Editor's Choice
AHT30 2pcs High Precision
AHT30 sensor
I2C interface
-40 to 85C
0 to 100% RH
5.0Editor score
Editor's Choice
Teyleten SHT31-D 3pcs
SHT31 sensor
I2C output
-40 to 125C
0 to 100% RH
4.7Editor score
Gikfun DS18B20 3 Sets
DS18B20 probe
1 Wire digital
-55 to 125C
Waterproof 1M cable
4.4Editor score
WWZMDiB DS18B20 5pcs
DS18B20 probe
Waterproof stainless
-55 to 125C
Includes resistors
4.4Editor score
DHT11 2pcs Module
DHT11 sensor
Digital output
0 to 50C
20 to 95% RH
4.3Editor score
DROK DS18B20 2 Pack
DS18B20 probe
Stainless steel
-55 to 125C
Includes adapter board
4.9Editor score
Gikfun DS18B20 5pcs
DS18B20 probe
Waterproof 1M
-55 to 125C
Pullup resistor tip
4.5Editor score
HiLetgo DHT22 2pcs
AM2302 sensor
Digital output
-40 to 80C
0 to 100% RH
4.4Editor score
HiLetgo DS18B20 5pcs
DS18B20 probe
Stainless steel
-55 to 125C
1 meter cable
4.5Editor score
1. HiLetgo DHT11 – Best Budget Arduino Temperature Sensor
HiLetgo 5pcs DHT11
DHT11 digital sensor
0 to 50C range
20 to 95% humidity
Single wire protocol
The HiLetgo 5pcs DHT11 module offers an excellent entry point for makers needing basic temperature and humidity monitoring. With a rating of 4.5 stars this pack provides five ready to use sensors that simplify bulk purchases for classrooms or multi node setups.
Pros
- Very affordable per unit cost
- Easy single wire integration
- Includes wires for quick start
- Wide voltage supply range
- Reliable for basic projects
Cons
- Limited temperature range
- Slower refresh rate
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Its single wire digital output reduces wiring complexity significantly while the onboard bypass capacitor ensures stable readings. The sensor works across a broad voltage range from 3.3V to 5V making it compatible with most Arduino boards and microcontrollers without additional regulators.
While the temperature range tops out at 50C it remains suitable for indoor environmental monitoring. The humidity accuracy is decent for general use though precision tasks may require higher end options like the SHT series for tighter tolerances.
This choice is ideal for students hobbyists or anyone building weather stations on a budget. The included cables save time on prototyping and the interchangeable nature of the modules means you can easily swap units if needed.
Simplified Wiring and Setup
The single bus digital signal means you only need one data pin plus power and ground which keeps breadboard layouts clean and organized for beginners.
Reliable Long Term Performance
Manufacturers state long term stability within 1 percent humidity ensuring consistent performance over months of continuous operation in standard indoor environments.
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2. AHT30 2pcs – Reliable I2C Humidity and Temp Module
AHT30 2pcs High Precision
AHT30 upgraded sensor
I2C communication protocol
-40 to 85C range
High resolution output
The AHT30 module delivers high precision digital temperature and humidity data through a standard I2C interface. Its perfect 5.0 rating reflects consistent performance and ease of integration into Arduino projects requiring accurate environmental monitoring.
Pros
- Perfect 5.0 star rating
- Fast I2C data transfer
- Wide voltage adaptability
- Multiple device support
- High resolution readings
Cons
- Requires I2C pins
- Slightly pricier than DHT
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With a supply voltage range from 2.0V to 5.5V this sensor adapts easily to various power sources. The ability to support simultaneous online access to multiple I2C devices makes it scalable for complex multi sensor setups on a single bus.
Resolution capabilities of 0.01C and 0.024 percent RH provide detailed insights for climate control applications. The 4P test line connection simplifies physical setup ensuring users can connect and start reading data quickly without soldering.
Ideal for advanced projects or smart home systems this sensor balances cost and performance effectively. Its stable transmission speed ensures real time updates which are critical for feedback loops in automated temperature regulation systems.
High Resolution Data Output
Achieving resolution down to 0.01 degrees Celsius allows for precise tracking of subtle temperature shifts in sensitive environments like greenhouses or server rooms.
Scalable Multi Sensor Design
The I2C master output allows connecting multiple sensors to the same bus enabling comprehensive spatial temperature mapping without using excessive GPIO pins.
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3. Teyleten SHT31-D – Editor's Choice High Accuracy Sensor
Teyleten Robot SHT31-D
SHT31 sensor core
Wide voltage 2.4 to 5.5V
-40 to 125C range
0.3C accuracy
The Teyleten Robot SHT31-D module stands out for its exceptional accuracy and wide operating range. With a rating of 4.7 stars it is a top contender for professional grade projects requiring reliable data collection in varying environmental conditions.
Pros
- Excellent temperature accuracy
- Wide operating voltage
- I2C interface standard
- Broad temp range
- Includes three units
Cons
- Higher cost per unit
- Needs I2C library
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Its temperature measurement accuracy of +/- 0.3C and humidity accuracy of +/- 2 percent RH make it suitable for scientific or industrial applications. The I2C interface simplifies wiring while the wide voltage range ensures compatibility with diverse power systems.
Operating between -40C and 125C this sensor handles extreme conditions better than many competitors. The inclusion of three units in the pack provides great value for building distributed sensor networks across multiple rooms or locations.
This choice is best for users needing high precision without resorting to complex calibration. The robust design and proven performance metrics justify the investment for projects where data integrity is paramount.
Industrial Grade Accuracy
With a tolerance of just 0.3 degrees the SHT31 ensures that critical climate controls remain accurate even during rapid environmental changes or prolonged usage cycles.
Versatile Voltage Compatibility
Supporting 2.4V to 5.5V DC means the module works seamlessly with both 3.3V and 5V Arduino boards without risking damage from overvoltage or undervoltage issues.
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4. Gikfun DS18B20 – Waterproof Probe for Wet Areas
Gikfun DS18B20 3 Sets
DS18B20 waterproof probe
1 Meter cable length
-55 to 125C range
Adapter module included
The Gikfun DS18B20 pack offers three waterproof temperature probes ideal for monitoring tanks or outdoor environments. Rated 4.4 stars these sensors deliver accurate readings even when fully submerged in water or exposed to moisture.
Pros
- Waterproof for aquatic use
- Includes adapter board
- Wide temp range
- Direct microcontroller connect
- Multiple sets in pack
Cons
- Requires 4.7K resistor
- One wire bus limits speed
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Each set includes an adapter module with a pull-up resistor allowing direct connection to most microcontrollers. The 1 meter cable provides flexibility in placement ensuring you can monitor areas far from the main control unit.
The measuring range spans from -55C to 125C covering nearly all industrial and hobby needs. While the one wire protocol is slower than I2C it simplifies wiring significantly by reducing pin usage on your Arduino board.
Best for fish tanks greenhouses or industrial machinery this sensor ensures reliability in harsh conditions. The included adapter boards save time and effort during prototyping making it a convenient choice for quick deployments.
Fully Waterproof Design
The stainless steel probe casing resists corrosion and water damage allowing continuous submersion in liquids without degrading sensor accuracy or functionality over time.
Integrated Adapter Module
Built-in pull-up resistor simplifies wiring since you can connect directly to GPIO pins without needing external components for stable digital signal transmission.
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5. WWZMDiB DS18B20 – Bulk Pack for Large Projects
WWZMDiB DS18B20 5pcs
DS18B20 waterproof probe
5 Pack value deal
0.5C accuracy
Includes resistors
The WWZMDiB pack provides five high accuracy DS18B20 waterproof probes designed for large scale monitoring projects. With a rating of 4.4 stars these sensors are compatible with Arduino Raspberry Pi and ESP32 platforms for broad integration options.
Pros
- High value bulk pack
- Waterproof for wet use
- Accuracy of 0.5C
- Includes resistors included
- Wide voltage support
Cons
- Longer shipping time
- Basic stainless casing
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Their waterproof design allows underwater use without damage from moisture making them suitable for ponds or industrial cooling systems. The wide temperature range from -55C to 125C ensures performance in extreme climates or controlled environments.
Each probe comes with a 4.7K resistor to stabilize the 1-Wire bus signals effectively. This inclusion eliminates the need to purchase resistors separately streamlining your project setup and reducing overall parts procurement time.
Ideal for distributed sensor networks this bulk option saves money compared to buying singles. The combination of accuracy and durability makes it a solid choice for anyone needing multiple reliable temperature points.
Cost Effective Bulk Buying
Purchasing five units together lowers the per unit cost significantly making it easier to build extensive temperature monitoring arrays without breaking your project budget.
Robust Waterproof Protection
Designed specifically for wet environments these probes withstand continuous moisture exposure ensuring your data remains accurate even when placed inside tanks or outdoor enclosures.
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6. DHT11 2pcs – Simple Digital Sensor Module
DHT11 2pcs Module
DHT11 digital sensor
3.3V to 5V voltage
0 to 50C range
Includes jumper wires
This 2pcs DHT11 module offers a straightforward solution for temperature and humidity sensing. Rated 4.3 stars it provides reliable digital signal output making it a favorite among beginners starting with environmental monitoring projects on Arduino boards.
Pros
- Very easy to wire
- Includes wires in pack
- Low power usage
- Reliable digital output
- Good for indoor use
Cons
- Basic accuracy specs
- Slower response time
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The dedicated digital module ensures high reliability and excellent long term stability. Its single-wire wiring scheme simplifies integration into existing circuits while reducing the number of required connections on your microcontroller board.
Humidity range spans from 20 to 95 percent with acceptable accuracy for general applications. The temperature range covers standard indoor conditions so it works well for home automation without needing specialized cooling or heating systems.
Perfect for classroom demos or basic climate control the module comes with wires to save setup time. Its affordability and simplicity make it a safe choice for prototyping where precision is secondary to functionality.
Simple Digital Integration
The digital output avoids analog noise issues and simplifies code by providing directly processed data values that are ready to use without conversion routines.
Convenient Wire Included
Packaging includes jumper wires which allows immediate connection to breadboards and reduces the time needed before testing your sensor readings.
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7. DROK DS18B20 – Premium Waterproof Kit
DROK 2 Pack Waterproof DS18B20
Stainless steel probe
0.5C accuracy
Adapter boards included
Complete wiring kit
The DROK 2 Pack delivers a premium experience with its corrosion resistant stainless steel probes and complete accessory kit. Rated 4.9 stars it excels in durability and ease of use for demanding applications requiring continuous submersion or harsh conditions.
Pros
- Highest rated 4.9 stars
- Corrosion resistant probe
- Complete kit included
- Clear wire color coding
- Flexible voltage range
Cons
- Higher price point
- More components to manage
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Accuracy of ±0.5°C across -55°C to 125°C ensures reliable data for critical systems. The clearly separated color coded wires and integrated pull-up resistor on the adapter board simplify wiring and reduce the chance of connection errors.
Included jumper wires and resistors mean everything needed for operation is in one box. This completeness saves time sourcing parts and ensures consistency across multiple projects or installations in different locations.
Best for professional or industrial setups this kit provides robust hardware backed by strong community feedback. Its design focuses on user convenience and long term reliability which justifies the investment for serious users.
Complete Hardware Kit
Including adapter boards jumper wires and resistors ensures you can start prototyping immediately without needing to visit a store for extra components.
High Precision Performance
The precision accuracy specification ensures your measurements are trustworthy enough for scientific logging or automated climate control systems in sensitive environments.
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8. Gikfun DS18B20 – Long Cable Waterproof Option
Gikfun DS18B20 5pcs
5 Pack waterproof probes
100 cm cable length
1 Wire interface
Wide temp range
This 5-piece set from Gikfun offers substantial value with one meter cables for each probe. Rated 4.5 stars these waterproof digital probes are ideal for monitoring environments where distance from the controller is a factor.
Pros
- Long 1 meter cable
- Pack of five probes
- Unique single bus
- Waterproof durability
- Easy integration
Cons
- Needs external resistor
- Cable may tangle
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The unique single bus interface allows daisy chaining multiple sensors on a single data line simplifying complex wiring layouts. The 100 cm cable length provides flexibility to place sensors in tight or distant locations easily.
Temperature range spans -55 to 125 degrees Celsius supporting diverse applications from freezing cold to high heat zones. Waterproof design ensures the probes can withstand wet conditions without compromising data integrity over time.
Best for large projects like greenhouses or industrial systems this pack balances flexibility with affordability. While you may need to source a resistor separately the overall convenience of the long cables makes it a top choice for distributed monitoring.
Extended Cable Reach
The one meter length allows placing probes far from your controller which is useful when measuring temperature in remote areas of a large enclosure or tank.
Single Bus Simplicity
Unique single bus wiring reduces pin usage on your Arduino board allowing you to monitor many locations using minimal microcontroller resources.
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9. HiLetgo DHT22 – Better Precision than DHT11
HiLetgo DHT22 2pcs
AM2302 high sensitive
0.5C accuracy
-40 to 80C range
0 to 100% RH
The HiLetgo DHT22 replaces older DHT11 with improved accuracy and wider ranges. Rated 4.4 stars it offers higher sensitivity and a wider humidity range making it suitable for projects demanding more precise climate data than basic modules.
Pros
- Better accuracy than DHT11
- Wider humidity range
- Single bus output
- Includes screw holes
- Compatible with many boards
Cons
- Requires slightly more power
- Slightly larger package
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Its temperature accuracy of +/- 0.5 degrees Celsius is significantly better than the standard DHT11. The bidirectional serial data output ensures clear communication and reduces errors during data transmission between the sensor and microcontroller.
Humidity range spans from 0 to 100 percent RH providing full coverage for any indoor or outdoor monitoring needs. Fixing screw holes simplify physical mounting ensuring your sensor stays secure in enclosures during long term operations.
Best for home automation or weather stations this module balances cost and precision well. Its compatibility with standard libraries means you can swap DHT11 for DHT22 with minimal code changes while gaining better performance.
Higher Accuracy Specs
Achieving half degree accuracy allows for finer control in climate systems where small temperature changes matter for product quality or environmental comfort.
Wider Humidity Range
Covering 0 to 100 percent RH ensures you can monitor extremely dry or humid environments without exceeding the sensor's detection capabilities or causing errors.
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10. HiLetgo DS18B20 – Stainless Steel Waterproof Bundle
HiLetgo DS18B20 5pcs
DS18B20 5 pack
Stainless steel cable
-55 to 125C range
Waterproof rated
This five pack from HiLetgo provides durable stainless steel probes for tough environments. Rated 4.5 stars it offers a cost effective way to deploy multiple waterproof temperature sensors across different locations in your project setup.
Pros
- Stainless steel protection
- Waterproof for submersion
- Five sensor pack
- Wide voltage supply
- Easy wiring setup
Cons
- No adapter boards
- No resistors included
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The stainless steel package protects the sensor from physical damage and corrosion. It operates on 3.0V to 5.5V making it compatible with common Arduino power rails without requiring external voltage regulation circuitry.
Temperature range of -55C to 125C ensures robust performance in nearly any thermal scenario. Waterproof rating allows direct submersion in liquids which is vital for pool monitoring or industrial cooling system tracking.
Ideal for bulk installations where durability is paramount this set delivers value and reliability. While you will need to source resistors separately the solid build quality and proven track record make it a trustworthy option for critical applications.
Durable Stainless Protection
The stainless steel casing ensures physical durability against impact or corrosion which is essential for industrial or outdoor deployments where plastic might degrade.
Consistent Power Operation
Operating across 3.0 to 5.5 volts ensures the sensor works reliably whether you power it from a 3.3V logic level or 5V standard board supply.
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Buying Guide – How to Choose the Best Arduino Temperature Sensor
Selecting the right temperature sensor involves balancing accuracy range connectivity and cost to match your project requirements.
Measurement Range and Accuracy
The measurement range defines the limits of temperatures your sensor can detect while accuracy determines how close the reading is to the actual value. Industrial applications often require wider ranges and tighter tolerances compared to basic home automation.
Always check the datasheet for minimum and maximum operating temperatures and ensure the accuracy matches your project needs.
Communication Interface
Sensors communicate using protocols like single wire I2C or UART. I2C allows multiple devices on one bus while single wire is simpler but slower. Choose based on your Arduino board's pin availability and required data speed.
Match the sensor protocol to your microcontroller capabilities to ensure stable data transmission without errors.
Environmental Protection
If your sensor will be exposed to moisture or harsh conditions choose a waterproof model with stainless steel casing. This durability prevents water damage and ensures consistent performance in outdoor or industrial settings.
Opt for waterproof models if you plan to use the sensor in liquids or exposed environments.
Power Requirements
Different sensors require different voltage levels ranging from 3.3V to 5.5V. Ensure your Arduino board can supply the required voltage and current without overloading its regulator or external power sources.
Verify voltage specs to avoid damaging your sensor or causing unstable readings due to power drops.
Physical Form Factor
The physical size and mounting options affect how easily you can integrate the sensor into your project. Some modules come with adapter boards while others are bare components requiring soldering.
Choose modules with adapter boards for quick prototyping without soldering.
Software Support
Popular sensors like DHT and DS18B20 have robust community libraries that simplify coding. Verify that library support exists for your specific sensor to save time during development and troubleshooting.
Check for available libraries in the Arduino IDE to streamline your coding process.
Cost and Quantity
Buying in bulk often reduces the cost per unit significantly. If you need multiple sensors for a network consider packs of five or ten to save money compared to purchasing singles.
Bulk packs offer better value for large scale deployments.
Cable Length
Long cables allow placing sensors away from the controller but may introduce signal degradation. Ensure the cable length is sufficient for your physical layout and the protocol supports long wires.
Verify cable length to ensure it reaches your target area without extra adapters.
How to Use and Care for Your Arduino Temperature Sensor
Begin by connecting the sensor power and ground pins to your Arduino board. If using a digital sensor attach the data pin to a digital GPIO pin and install any required pull-up resistors on the data line.
Install the specific library for your sensor model in the Arduino IDE to simplify data reading. Use example code to verify the connection and calibrate the sensor to ensure readings match known values.
Protect the sensor from physical damage and extreme conditions by housing it in a protective enclosure if not waterproof. Regularly check connections and cleaning the probe surface to maintain accurate readings over time.
Frequently Asked Questions
Which Arduino temperature sensor is the most accurate?
The SHT31 and AHT30 sensors offer superior accuracy with tolerances around 0.3 degrees Celsius. They are ideal for projects where precise climate data is critical. The DS18B20 provides good accuracy for waterproof applications.
Can I use multiple temperature sensors on one Arduino?
Yes using protocols like I2C or 1-Wire allows daisy chaining multiple sensors. You will need to assign unique addresses or manage the bus correctly. This setup is perfect for monitoring different zones in a single system.
Do waterproof sensors work underwater?
Yes waterproof sensors with stainless steel casings are designed for submersion. They are tested to withstand water pressure and corrosion. Always check the IP rating to ensure suitability for deep water applications.
Why is my sensor reading wrong?
Incorrect readings often result from power issues or wiring errors. Verify your connections and pull-up resistors are installed correctly. Also ensure you are using the latest library to avoid compatibility issues with your board.
Do I need a pull-up resistor?
For single-wire sensors like the DS18B20 a 4.7K pull-up resistor is typically required. Some modules come with this resistor built-in. Check your specific module to avoid needing external components for stable signals.
Can I use these sensors with ESP32 or ESP8266?
Yes these sensors are compatible with ESP32 and ESP8266 boards. They share the same logic voltage levels and libraries. Ensure your board provides the required voltage and current for stable operation.
Final Thoughts on Choosing the Best Arduino Temperature Sensor
We reviewed ten reliable options ranging from budget DHT modules to premium waterproof probes. The DHT11 offers great value for beginners while the SHT31 delivers high precision for complex projects.
Prioritize waterproof models for industrial use and digital interfaces for ease of wiring. Match your choice to the specific environmental challenges your project will face to ensure longevity.
Always verify current prices and availability as these factors can change quickly. Select the sensor that balances your budget with the accuracy and durability your specific application demands.