2pcs AHT30 High Precision Digital Temperature and Humidity Sensor Measurement Module
5.0Editor score
I2C communication protocol
Low power consumption
High precision measurement
In this guide
Choosing the right Arduino temperature sensor is crucial for any project involving environmental monitoring or thermal control. Whether you are building a weather station or a smart thermostat, selecting a reliable module ensures accurate data collection and system stability over time.
We evaluated ten popular sensors based on accuracy, voltage range, communication protocol, and build quality. Our analysis focuses on real-world performance, ease of integration with common microcontrollers, and the specific use cases each sensor addresses best.
Each pick highlights key features, pros, and cons to help you make an informed decision quickly. Prices and availability fluctuate frequently, so please check the linked product pages for the most current offers before finalizing your purchase.
Top 3 Picks for Best Arduino Temperature Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
4.5Editor score
Single-wire digital output
Integrated bypass capacitor
Easy microcontroller integration
DROK 2 Pack Waterproof DS18B20 Temperature Sensor Probes
4.9Editor score
Stainless steel waterproof probe
Wide temperature range
Includes adapter board
Top 10 Best Arduino Temperature Sensor in 2026 Compared
The following table provides a side-by-side comparison of the top ten Arduino temperature sensors available. Each entry highlights the short name, direct product link, and key specifications to help you quickly identify the right fit for your specific application requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HiLetgo DHT11 Module
Range: 0-50°C
Voltage: 3.3-5V
Output: Single Bus
Accuracy: ±2°C
4.5Editor score
Editor's Choice
AHT30 High Precision Module
Range: -40-85°C
Voltage: 2.0-5.5V
Output: I2C
Accuracy: ±0.3°C
5.0Editor score
Best Premium
Teyleten SHT31-D Module
Range: -40-125°C
Voltage: 2.4-5.5V
Output: I2C
Accuracy: ±0.3°C
4.7Editor score
Gikfun DS18B20 Waterproof
Range: -55-125°C
Voltage: 3.3-5V
Output: 1-Wire
Cable: 1 Meter
4.4Editor score
WWZMDiB DS18B20 Probe
Range: -55-125°C
Voltage: 3-5.25V
Output: 1-Wire
Package: 5 Pack
4.4Editor score
2pcs DHT11 Module
Range: 0-50°C
Voltage: 3.3-5V
Output: Digital
Accuracy: ±2°C
4.3Editor score
DROK DS18B20 Waterproof
Range: -55-125°C
Voltage: 3.0-5.5V
Output: 1-Wire
Accuracy: ±0.5°C
4.9Editor score
Gikfun 1M DS18B20
Range: -55-125°C
Voltage: 3.0-5.5V
Output: Single Bus
Cable: 1 Meter
4.5Editor score
HiLetgo DHT22 AM2302
Range: -40-80°C
Voltage: 3.3-5V
Output: Single-Bus
Accuracy: ±0.5°C
4.4Editor score
HiLetgo DS18B20 Stainless
Range: -55-125°C
Voltage: 3.0-5.5V
Output: Single Bus
Cable: 1 Meter
4.5Editor score
1. HiLetgo DHT11 – Best Overall Arduino Temperature Sensor
HiLetgo 5pcs DHT11 Temperature Humidity Sensor Module
Single Wire Protocol
3.3V to 5V
0 to 50 Celsius Range
Humidity and Temp
The HiLetgo DHT11 module ranks first due to its balance of cost and simplicity. It delivers reliable digital outputs for both temperature and humidity with minimal wiring complexity. Its compact design and pre-installed components make it ideal for beginners starting their first sensor project.
Pros
- Affordable 5 pack value
- Pre-assembled module board
- Easy single wire setup
- Stable digital output
- Integrated bypass capacitor
Cons
- Limited temperature range
- Moderate accuracy level
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This sensor uses a single-wire protocol that simplifies integration with Arduino boards. The module includes a bypass capacitor and pull-up resistor, reducing external component needs. Its digital calibration ensures stable readings across its specified operating range for consistent performance.
The measurement range of zero to fifty degrees Celsius may limit outdoor or extreme environment applications. Accuracy is acceptable for general monitoring but falls short of high-precision industrial needs. These trade-offs are reasonable given its low cost and ease of use.
Choose this module for indoor hobby projects like climate monitoring or simple thermostats. It provides excellent value for prototyping where absolute precision is less critical than quick setup and reliable basic data collection for educational purposes.
Simplified Wiring Setup
The single-wire digital output connects directly to any GPIO pin requiring only three wires total.
Integrated Circuit Protection
An onboard bypass capacitor stabilizes power input for consistent sensor operation without extra parts.
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2. AHT30 High Precision – Best Budget Arduino Temperature Sensor
2pcs AHT30 High Precision Digital Temperature and Humidity Sensor Measurement Module
I2C Communication
2.0V to 5.5V
-40 to 85 Celsius Range
0.3 Celsius Accuracy
The AHT30 module stands out for offering high precision at a very competitive price. Its I2C interface allows multiple sensors on one bus and supports wide voltage ranges for flexible power sources. This makes it ideal for budget-conscious users needing accurate environmental data.
Pros
- High precision measurement
- I2C interface support
- Low voltage operation
- Fast transmission speed
- Four pin connection
Cons
- I2C address handling
- Requires pull-up resistors
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With accuracy reaching plus or minus zero point three degrees Celsius this sensor delivers superior performance. The low power consumption suits battery-powered projects and the four test line connection simplifies physical wiring. It supports simultaneous online access to multiple devices easily.
Setting up I2C devices requires managing addresses and external pull-up resistors which can confuse beginners. The compact design may be sensitive to physical stress during soldering or prototyping. These factors are minor considering the significant accuracy gains over simpler sensors.
Select this sensor for projects requiring accurate humidity and temperature readings without high costs. It is perfect for smart home devices or automated greenhouse systems where precision improves system efficiency and long-term performance significantly.
Superior Accuracy Level
Achieves temperature accuracy within zero point three degrees for reliable climate control applications.
Wide Voltage Compatibility
Operates reliably from two point zero to five point five volts for diverse power options.
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3. DROK DS18B20 – Best Premium Arduino Temperature Sensor
DROK 2 Pack Waterproof DS18B20 Temperature Sensor Probes
1-Wire Interface
3.0V to 5.5V
-55 to 125 Celsius Range
Stainless Steel Probe
The DROK DS18B20 set provides premium durability with stainless steel waterproof probes suitable for harsh conditions. It includes adapter boards and resistors for immediate setup. The wide temperature range makes it ideal for industrial or outdoor thermal monitoring tasks.
Pros
- Waterproof stainless steel
- Extremely wide range
- Complete adapter kit
- High accuracy tolerance
- Corrosion resistant build
Cons
- Requires 4.7K resistor
- Larger probe size
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Its accuracy of plus or minus zero point five degrees Celsius ensures reliable measurements across diverse environments. The waterproof seal allows full submersion in tanks or liquids. Clear color-coded wires simplify connections to microcontrollers like Arduino or Raspberry Pi easily.
The physical probe size may be bulky for tight spaces and the wiring requires attention to resistor placement. Heat shrink tubing helps but adds setup time. These limitations are acceptable for the ruggedness and reliability it delivers in demanding applications.
Choose this set for aquaculture, industrial machinery monitoring, or any wet environment. It offers the durability and precision needed for long-term deployments where failure risks are high and accurate data is essential.
Robust Waterproof Design
Sealed stainless steel casing resists corrosion and supports continuous submersion in liquids.
Complete Integration Kit
Includes adapter boards and resistors for plug-and-play connections to development platforms.
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4. Teyleten SHT31 – High Precision I2C Sensor
Teyleten SHT31-D SHT31 Temperature Humidity Sensor Module
I2C Output
2.4V to 5.5V
-40 to 125 Celsius Range
0.3 Celsius Accuracy
The Teyleten SHT31 module offers wide temperature range support from minus forty to one hundred twenty five degrees Celsius. It features I2C communication and a wide voltage range making it versatile for various power environments. The three-pack provides excellent value for multi-location projects.
Pros
- Wide voltage range
- Full humidity coverage
- High precision data
- Three pack value
- Stable I2C bus
Cons
- I2C wiring needed
- Higher price point
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Humidity measurement covers zero to one hundred percent relative humidity with high accuracy. The module uses a standard I2C interface that simplifies code and wiring for advanced users. Its design ensures stable readings even in fluctuating voltage conditions.
It requires I2C pull-up resistors and proper address management which may complicate simple setups. The packaging is compact and may need care during physical installation. These minor hurdles are outweighed by its precision and broad operating capabilities.
This module fits well in HVAC control or agricultural monitoring requiring extended temperature ranges. It balances cost with professional-grade performance for projects needing detailed environmental tracking and reliable long-term operation.
Extended Temperature Range
Supports measurements from negative forty to one hundred twenty five degrees for broad applications.
I2C Communication
Uses standard I2C protocol for efficient multi-device integration on shared data lines.
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5. Gikfun DS18B20 – Reliable Waterproof Probe Kit
Gikfun 1M DS18B20 Waterproof Digital Temperature Sensor
1-Wire Protocol
3.3V to 5V
-55 to 125 Celsius Range
1 Meter Cable
The Gikfun DS18B20 kit includes adapter modules and one meter cables ideal for distanced temperature monitoring. Its waterproof stainless steel probe ensures reliability in moist environments. This setup simplifies physical installation in tanks or outdoor machinery without extra parts.
Pros
- Waterproof stainless probe
- 1 meter cable length
- Adapter board included
- Wide temperature range
- Three set package
Cons
- Cable not shielded
- Requires external resistor
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The adapter board integrates a pull-up resistor for direct connection to microcontrollers. Wiring uses clear color codes for quick identification and safe connection. The probe withstands temperatures up to eighty five degrees on leads for typical industrial use.
The cable lacks heavy shielding which may interfere in electrically noisy environments. External resistor requirements can trip up first-time builders. These factors are manageable with care and add cost but remain minor concerns for most hobby applications.
Select this kit for fish tanks or industrial equipment monitoring needing distance sensing. Its waterproof design and included adapter boards reduce setup complexity while delivering accurate readings in demanding conditions.
Adapter Integration
Adapter board simplifies wiring with integrated resistor and clear color-coded output leads.
Cable Length
One meter cable provides flexibility for sensor placement away from control boards.
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6. WWZMDiB DS18B20 – Great Value 5 Pack
WWZMDiB DS18B20 Temperature Sensor Probe
1-Wire Interface
3V to 5.25V
-55 to 125 Celsius Range
5 Pack with Resistors
The WWZMDiB DS18B20 five pack provides excellent value for distributed temperature monitoring projects. Each probe includes a necessary 4.7K resistor and supports water exposure safely. Its wide voltage range ensures compatibility across multiple microcontroller platforms easily.
Pros
- Five probes per pack
- Includes resistors
- Waterproof design
- Wide voltage range
- Good temperature spread
Cons
- Basic probe casing
- No adapter board
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Operational voltage ranges from three to five point two five volts offering flexible power options. The waterproof design suits wet environments without extra sealing. High-accuracy readings make it suitable for precise thermal control in varied settings.
The casing lacks heavy protection and no adapter board is included requiring custom wiring. This increases setup time compared to modular kits. These downsides are offset by the cost savings and quantity offered for larger projects.
Buy this pack for multi-zone temperature tracking in agriculture or climate control. It balances affordability with reliable performance for users comfortable with basic electronics and custom wiring setups.
Included Resistors
Each probe comes with a required 4.7K resistor reducing extra part sourcing needs.
Waterproof Design
Sealed construction allows reliable operation in humid or submerged environments safely.
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7. HiLetgo DHT11 (2pcs) – Simple Dual Pack
2pcs DHT11 Temperature Humidity Sensor Module
Digital Output
3.3V to 5V
0 to 50 Celsius Range
Humidity Included
This two-pack DHT11 module offers a simple entry point for temperature and humidity sensing. Its single-wire protocol eases integration into small projects and the integrated resistor simplifies wiring. It is highly compatible with Raspberry Pi and Arduino boards.
Pros
- Two pack value
- Simple single-wire setup
- Integrated resistor
- Stable digital signal
- Beginner friendly
Cons
- Low accuracy level
- Limited humidity range
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Humidity measurement spans twenty to ninety five percent with temperature from zero to fifty degrees. The digital output minimizes noise and ensures stable readings. A high-performance eight-bit microcontroller inside calibrates the sensor for consistency.
Accuracy is limited by plus or minus five percent humidity and two degrees Celsius. Humidity coverage excludes extreme low ranges and may not suit strict agricultural control. These limits are acceptable for general monitoring where exact precision is not vital.
Choose this set for classroom demos or basic room climate monitoring. It delivers reliable enough data for simple automation tasks while remaining extremely cost-effective and easy to implement for beginners.
Compact Module Design
The compact size and pre-installed components simplify physical assembly on breadboards.
Easy Communication Protocol
Single-wire digital output reduces programming effort and wiring complexity significantly.
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8. Gikfun DS18B20 (5pcs) – Bulk Waterproof Probe
Gikfun 5PCS 1M DS18B20 Temperature Sensor Waterproof
Single Bus Interface
3V to 5.5V
-55 to 125 Celsius Range
1 Meter Cable
This bulk five-pack DS18B20 set offers cost-effective multi-point monitoring with one meter cables. The waterproof probes allow direct submersion for accurate liquid temperature readings. Color-coded wires and single bus design simplify connections to Arduino microcontrollers.
Pros
- Five probes with cables
- Waterproof stainless casing
- Wide temperature span
- Long cable length
- Easy color coding
Cons
- No resistor included
- Basic wire jacket
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Voltage operates from three to five point five volts ensuring compatibility with most boards. The temperature range covers minus fifty five to one hundred twenty five degrees for diverse uses. Unique single bus interface supports chaining multiple sensors on one pin.
No resistors are included so external ones must be sourced and soldered. The cable jacket is not heavy-duty for harsh mechanical abrasion. These factors add minor setup effort but remain manageable for most DIY enthusiasts.
Use this set for large-scale monitoring in greenhouses or industrial racks. It provides robust waterproofing and long cables for remote sensing while keeping overall project costs low.
Single Bus Interface
Supports multiple sensors on one data line for efficient multi-point monitoring setups.
Waterproof Construction
Sealed stainless steel housing enables reliable use in wet or submerged environments.
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9. HiLetgo DHT22 – Improved Humidity Accuracy
HiLetgo 2pcs DHT22/AM2302 Digital Temperature and Humidity Sensor
Single-Bus Digital
3.3V to 5V
-40 to 80 Celsius Range
0.5 Celsius Accuracy
The DHT22/AM2302 module improves accuracy over the DHT11 with plus or minus zero point five degrees Celsius. Its humidity range extends to one hundred percent providing broader monitoring. Screw mounting holes allow secure permanent installation in fixed setups.
Pros
- Better accuracy than DHT11
- Humidity coverage to 100%
- Screw mounting holes
- Bidirectional serial data
- Two pack value
Cons
- Higher cost than DHT11
- Needs pull-up resistor
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Bidirectional serial data output ensures reliable communication between the sensor and controller. Temperature and humidity ranges suit general indoor and greenhouse environments. Its chip uses high sensitivity technology for consistent long-term stability.
It requires an external pull-up resistor and a slightly higher setup effort. The cost exceeds simpler models and may not suit tight budgets. These drawbacks are acceptable given the higher precision and mounting flexibility offered.
Select this module for climate-controlled spaces needing reliable humidity and temperature data. It is ideal for advanced DIY projects where accuracy matters and physical mounting stability is desired for long-term use.
Improved Accuracy
Delivers temperature accuracy within half a degree for more precise monitoring tasks.
Mounting Flexibility
Includes screw mounting holes for secure fixed installation in permanent enclosures.
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10. HiLetgo DS18B20 (5pcs) – Stainless Steel Value Pack
HiLetgo 5pcs DS18B20 Temperature Sensor Temperature Probe
Single Bus Interface
3V to 5.5V
-55 to 125 Celsius Range
5 Stainless Probes
This five-pack DS18B20 set offers stainless steel waterproof probes for durability. Each probe includes a one meter cable for remote placement flexibility. The single bus interface simplifies wiring and supports multiple sensors on one data pin.
Pros
- Stainless steel probes
- Five-pack value
- 1 meter cables
- Wide voltage range
- Waterproof design
Cons
- Resistors not included
- No adapter boards
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Voltage operates from three to five point five volts for broad compatibility. The temperature range covers extreme low to high values ensuring versatility. Waterproof packaging supports use in liquids or humid environments without additional sealing.
Resistors and adapter boards are not included requiring extra components and soldering. This adds initial setup complexity compared to plug-and-play modules. These factors are minor given the robust build and quantity offered at a low price.
Use this pack for industrial or agricultural projects requiring multiple waterproof sensors. It balances durability and cost for applications needing reliable performance in varied thermal and physical conditions.
Stainless Steel Durability
Stainless steel casing resists corrosion and provides long-term physical robustness.
Remote Placement Flexibility
One meter cables enable sensor positioning far from control boards or power sources.
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Buying Guide – How to Choose the Best Arduino Temperature Sensor
Selecting the right temperature sensor depends on your project requirements including precision, environment, and ease of wiring. This guide explains key factors to consider before purchasing for optimal results.
Temperature Range
Ensure the sensor covers your expected minimum and maximum operating temperatures. Industrial or outdoor applications need wider ranges like minus fifty five to one hundred twenty five degrees Celsius while indoor use typically suffices with zero to fifty degrees.
Always choose a sensor with a range exceeding your project needs for safety and reliability.
Accuracy and Precision
Higher accuracy sensors like SHT31 or AHT30 offer plus or minus zero point three degrees versus simple DHT11 models at plus or minus two degrees. Precision matters for strict climate control or scientific monitoring tasks.
Prioritize higher accuracy if your system relies on exact thresholds for automation decisions.
Communication Protocol
Sensors use digital interfaces such as I2C or single-wire. I2C supports multiple devices and simplifies code but requires pull-up resistors. Single-wire options like DS18B20 reduce wiring complexity but limit bus scalability.
Select a protocol matching your microcontroller capability and project wiring constraints.
Voltage Requirements
Most sensors operate between three point three and five volts but some support wider ranges like two to five point five volts. Match the sensor to your board power output to avoid damage or unstable readings.
Check voltage specs before buying to ensure compatibility with your power supply setup.
Environmental Durability
Waterproof stainless steel probes suit submersion or outdoor use. Standard modules work only indoors and may fail in moisture. Consider your physical environment when choosing casing and seal types.
Invest in waterproof variants if any liquid exposure or outdoor exposure is expected.
Included Components
Some kits include adapter boards or resistors while others require separate purchases. Complete kits reduce initial setup time but cost slightly more. Basic packs offer lower cost but need extra parts for wiring.
Assess your electronics toolkit to decide between bundled components or standalone sensors.
Humidity Measurement
Combined temperature and humidity sensors like DHT22 or AHT30 reduce component count for environmental projects. Dedicated temperature-only sensors are better if humidity tracking is unnecessary for your application.
Choose integrated sensors for climate monitoring or single-parameter for specialized thermal tasks.
Physical Form Factor
Compact modules save space but require external resistors while probes add size but offer durability. Consider enclosure space and mounting options when selecting physical sizes and probe lengths.
Match the form factor to your enclosure design for clean assembly and maintenance access.
How to Use and Care for Your Arduino Temperature Sensor
Start by connecting the power leads to your board VCC and GND pins. Ensure voltage matches the sensor specifications to prevent damage. Use appropriate pull-up resistors for single-wire or I2C interfaces as required by your module.
Install reliable libraries in your Arduino IDE for your chosen sensor model to simplify code. Test with basic sketches to verify output before integrating into complex projects. Ensure wiring is secure and insulated to avoid short circuits.
Keep sensors away from direct heat sources for accurate readings. For waterproof models inspect seals periodically for damage. Replace cables or probes showing signs of wear to maintain consistent performance over time.
Frequently Asked Questions
What is the best Arduino temperature sensor for beginners?
The DHT11 module is ideal for beginners due to its simplicity and low cost. It uses single-wire digital output and requires minimal wiring. Libraries are widely available making setup straightforward for first-time users.
How do I calibrate my temperature sensor for better accuracy?
Calibration involves comparing readings against a known accurate reference thermometer. Adjust offset values in your code based on measured differences. Most sensors come pre-calibrated so minor software adjustments usually suffice.
Can I use waterproof temperature sensors in hot liquids?
Most waterproof probes like DS18B20 handle up to one hundred twenty five degrees Celsius. Check lead wire ratings before immersion in liquids above eighty five degrees. Always follow manufacturer temperature limits to ensure safety and longevity.
Why is my sensor showing unstable temperature readings?
Unstable readings often come from loose wiring or insufficient power supply filtering. Ensure all connections are secure and add a bypass capacitor if needed. Avoid interference from high current devices nearby.
Which sensor supports multiple temperature measurements on one pin?
The DS18B20 uses a 1-Wire protocol supporting multiple sensors on a single GPIO pin. Each sensor has a unique address allowing individual identification. This feature simplifies multi-point monitoring projects significantly.
How long do Arduino temperature sensors typically last?
Well-maintained sensors can last several years depending on environmental stress. Humidity and voltage spikes accelerate wear. Regular inspection and proper power regulation extend their operational lifespan effectively.
Final Thoughts on Choosing the Best Arduino Temperature Sensor
Our top picks include the HiLetgo DHT11 for ease of use, the AHT30 for budget accuracy, and the DROK DS18B20 for rugged waterproofing. Each offers unique strengths suited to different project types and environments.
Prioritize accuracy and environmental durability based on your application needs. Industrial and outdoor projects benefit from stainless steel waterproof probes while hobbyists often prefer simple digital modules.
Prices and availability fluctuate frequently so verify current offers before purchasing. Check detailed specs and user reviews to confirm the sensor fits your specific requirements and power constraints.