- Home Page /
- Appliances /
- Parts & Accessories /
- Humidifier Parts & Accessories /
- Humidity Meters /
- Adafruit HTU21D-F Temperature & Humidity Sens...
0 ratings
![Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899]](https://m.media-amazon.com/images/I/81V4IctiMlS._SX466_.jpg)
![Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899]](https://www.ubuy.com.zm/productimg/?image=aHR0cHM6Ly9tLm1lZGlhLWFtYXpvbi5jb20vaW1hZ2VzL0kvODFWNEljdGlNbFMuX1NYNDY2Xy5qcGc.jpg)
Item #:
36953259
Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899]
83% of respondents would recommend this to a friend
Item #:
36953259
ZMW 708
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Saturday, September 26
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
The HTU21D-F Temperature + Humidity Sensor is the best way to prove the weatherman wrong!
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Accuracy
Delivers precise temperature and humidity readings, ensuring reliable data collection for various applications.
Compact Design
Small form factor allows easy integration into projects without taking up excessive space, ideal for DIY enthusiasts and embedded systems.
I2C Interface
Utilizes a simple I2C interface, enabling straightforward communication with microcontrollers and easing the development process.
Product Details
- HTU21D-F Temperature + Humidity Sensor breakout board
- I2C digital humidity sensor with ±2% accuracy
- Operating range optimized from 5% to 95% RH
- Temperature output accuracy of ±1°C from -30~90°C
- Includes a PTFE filter, 3.3V regulator, and I2C level shifting circuitry
- Fully assembled and tested PCB breakout with header for soldering
| Maximum Supply Voltage | 3.3 volts_of_direct_current |
| Output Type | Digital |
| Specific Uses For Product | environmental monitoring, indoor use, outdoor use, microcontroller integration, humidity measurement |
| Material Type | Plastic |
| Style Name | Modern |
| Item Dimensions | 2.76 x 4.72 x 0.2 inches (7 x 12 x 0.5 cm) |
| Item Weight | 9.07 g |
| Brand Name | Adafruit |
| Model | 100442 |
| UPC | 701980281617 748347523164 717520032014 |
| Number of Items | 1 |
| Global Trade Identification Number | 00701980281617 |
| Manufacturer | Adafruit |
| Unit Count | 1 Count |
| Part Number | 100442 |
| Brand | Adafruit |
| Item dimensions L x W x H | 2.76 x 4.72 x 0.2 inches (7 x 12 x 0.5 cm) |
| Material | Plastic |
| Style | Modern |
Who Should Buy?
-
DIY Project Enthusiasts
Ideal for hobbyists who want to integrate temperature and humidity sensing into their home automation projects.
-
Environmental Monitors
Suitable for those creating devices to monitor weather conditions in gardens, greenhouses, or outdoor environments.
-
STEM Education
Great for educators and students learning about sensors, data collection, and environmental science through hands-on projects.
-
High Precision Needs
Not ideal for users requiring highly accurate temperature and humidity measurements in professional applications.
Product Description
Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899]
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board?
Answer: The Adafruit HTU21D-F is a high-accuracy, compact sensor that measures temperature and humidity. This breakout board makes it easy to integrate into your projects, featuring a simple I2C interface for communication and the ability to read both parameters simultaneously. Its high sensitivity and minimal power consumption make it ideal for portable devices and IoT applications like weather monitoring systems, home automation, or environmental data logging. -
Question:
How accurate is the HTU21D-F sensor?
Answer: The HTU21D-F sensor boasts an impressive accuracy of ±0.4°C for temperature measurements and ±2% RH for humidity readings. This level of precision makes it suitable for various applications, including scientific research, weather stations, and HVAC systems. Its reliability ensures that you can trust your data, whether for hobby projects or professional setups. -
Question:
What are the main features of the HTU21D-F breakout board?
Answer: This breakout board features a high-resolution 14-bit temperature sensor and a 12-bit humidity sensor, offering high-performance measurements. Additionally, it includes an easy-to-use I2C interface, a built-in EEPROM for calibration data, and operates within a wide voltage range. With its small footprint and simple design, it is perfect for DIY projects requiring environmental measurements. -
Question:
How can I connect the HTU21D-F sensor to my microcontroller?
Answer: Connecting the HTU21D-F to a microcontroller is straightforward, as it uses the I2C communication protocol. You simply need to connect the SDA and SCL pins of the sensor to the corresponding pins on your microcontroller, along with power and ground connections. Many libraries are available (e.g., for Arduino or Raspberry Pi) that simplify coding and allow for quick startup in your projects. -
Question:
Can the HTU21D-F sensor be used in indoor and outdoor environments?
Answer: Yes, the HTU21D-F sensor is suitable for both indoor and outdoor applications. Its wide operating range allows it to function effectively from -40°C to 125°C for temperature and 0% to 100% RH for humidity. This versatility makes it ideal for a range of projects such as home automation systems, weather stations, and climate control setups, adapting easily to the environmental conditions. -
Question:
What kind of projects can I use the HTU21D-F in?
Answer: The HTU21D-F sensor is perfect for a variety of projects, including DIY weather stations, greenhouse monitoring systems, and indoor climate control by integrating it with microcontrollers like Arduino or Raspberry Pi. It's also suitable for data logging applications, where you can record environmental data over time for analysis or research purposes. -
Question:
Is the HTU21D-F sensor waterproof?
Answer: No, the HTU21D-F sensor is not waterproof. It is designed for indoor applications and should be protected from water exposure. If used outdoors, ensure that it is housed in a suitable enclosure to prevent damage from moisture, while still allowing for accurate temperature and humidity readings. -
Question:
What libraries are available for the HTU21D-F sensor?
Answer: There are several libraries available for working with the HTU21D-F sensor, especially for popular platforms like Arduino and Raspberry Pi. For Arduino users, the Adafruit HTU21DF library provides an easy interface for reading temperature and humidity data. For Raspberry Pi, Python libraries like 'smbus2' allow straightforward access to the sensor's capabilities, making it easy to integrate into projects. -
Question:
How do I calibrate the HTU21D-F sensor?
Answer: The HTU21D-F sensor is factory calibrated; however, if you need to re-calibrate it, you can do so using known temperature and humidity values. Typically, this involves comparing the sensor output to a reference sensor and adjusting your software to correct for any discrepancies. Regular checks can help maintain accuracy over time, which is particularly crucial for precise applications. -
Question:
Where can I buy Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899]?
Answer: You can purchase the Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board [ADA1899] from Ubuy. They provide a reliable platform for purchasing this sensor with convenient shipping options to various locations, ensuring you receive your product quickly and efficiently for your projects.
Adafruit Humidity Meters Editorial Review
The Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board is well received by customers. One reviewer found that the board they received was not the current version shown in the pictures, but others were able to easily configure it on their Arduino and had it running within minutes. One customer used the board to monitor the temperature and humidity in their basement and found it to be accurate. Another used it in a home automation project with an altmega328 and was able to send data to the web every hour. Overall, customers found this to be the best temperature sensor they had ever used and praised Adafruit as a fantastic company to purchase from.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Accurate temperature and humidity readings
- Easy to configure on Arduino
- Fast updates
- Good for home automation projects and monitoring
- Adafruit is a fantastic company to purchase from
Cons
- One reviewer received an old, header-only version instead of the current version shown in the pictures.
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
ZMW 708
Order now and get it around Saturday, September 26
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Accurate humidity measurement with ±2% accuracy.
- Wide operating range from 5% to 95% RH.
- Temperature measurement with ±1°C accuracy.
- Includes a filtered design to keep the sensor clean.
- Compatible with 3.3V-5V microcontrollers.
- Easy assembly: just solder the header onto the PCB.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.