Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Interface | I2C |
| Supply Voltage | 1.5V ~ 3.6V DC |
| Temperature Range | -40°C to +125°C |
| Humidity Range | 0% to 100% RH |
| Temperature Accuracy | ±0.3°C (at 25°C) |
| Humidity Accuracy | ±2% RH (20-80% RH) |
| Response Time | 5s (63% RH step) |
| Package Type | DFN-6 Surface Mount |
| Dimensions | 3mm x 3mm x 1.1mm |
| Application | HVAC, Weather Stations, IoT Devices |
Anonymous
Mar 30, 2026
Rating: 5/5
Easy to use for beginners
Found plenty of example code online. Connected it to my ESP32 and had data logging up and running in under an hour.
Anonymous
Mar 21, 2026
Rating: 4/5
Good precision, low power
Power consumption is very low, which is great for battery-operated nodes. Temperature reading is spot on; humidity is within expected tolerance.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable humidity monitoring
I used these in a custom controller for my greenhouse. They handle high humidity environments well without drifting significantly over time.
Anonymous
Mar 04, 2026
Rating: 4/5
Great value, small footprint
The DFN package is tiny, so soldering requires a steady hand or a hot air station. Once mounted, performance is solid for the price point.
Anonymous
Mar 04, 2026
Rating: 5/5
Perfect for my weather station project
These sensors are incredibly accurate and easy to interface with an Arduino using the I2C library. The readings stabilize quickly and match my calibrated reference meter.
Anonymous
Mar 01, 2026
Rating: 5/5
Consistent performance
Bought a batch of ten for a distributed sensing network. All units performed consistently out of the box with minimal calibration needed.
Q: Is this sensor suitable for outdoor use?
A: The sensor itself is not waterproof. If used outdoors, it must be housed in a breathable enclosure that protects against rain and direct sunlight while allowing air flow.
Q: What is the I2C address for this sensor?
A: The default I2C address for the HTU21D/HTU20D is typically 0x40. Please refer to the datasheet for details on changing this if supported by your specific variant.
Q: How long does it take to get a new reading?
A: The conversion time depends on the resolution setting. At highest resolution, it takes approximately 50ms for temperature and 16ms for humidity measurements.
Q: Can I use this with a 5V Arduino Uno directly?
A: No, the operating voltage is 1.5V to 3.6V. You must use a logic level shifter or run your microcontroller at 3.3V to avoid damaging the sensor.
Q: Does this module come with pull-up resistors for the I2C lines?
A: This is the bare sensor module. While some breakout boards include pull-up resistors, this specific item typically requires you to add external 4.7kΩ pull-up resistors to your SDA and SCL lines.
Heidelberg Printing Press Automatic Blanket Wash Cloth - Non-Woven Cleaning Fabric, 500m Roll
$3,185.00
Bucket Pack Natural Wood Colored Pencils Water-Soluble for Kids Coloring and Doodling
$6.65
Chunfei Grocery Store Yunm'an GR02 Gravel Bike - Thru-Axle Disc Brake, Lightweight Touring with Multiple Rack Mounts
$6,444.00
Variable Frequency Drive Power Board ZPOW-591 for ACS880
$2,200.00
Professional Sketching Eraser Kit - Blending Stumps, Sponges, and Paper Tortillons for Highlight & Shadow Correction
$3.90
Weighted Water Bag with Handle, Thickened PV Mesh Gravity Ballast for Banner Stand Fixation (8KG)
$35.10
Ultra-Fine Purification Lint-Free Cloth Cleaning Cloth Lens Wipe High Quality 0730 Water-Absorbing Dust Removal UV Nozzle 100 Sheets
$96.00
Wen Zhengming Small Regular Script Calligraphy Cards: Li Sao Jing, Thousand Character Classic, Qin Fu, Cao Tang Shi Zhi, Qing Jing Jing, Record of the Drunken Pavilion, Red Cliff Ode
$59.00
Zhizhi Manshu Zhao Mengfu Small Regular Script Collection of Ancient Classics (Vol. 1) - Calligraphy Copybook, Brush Writing Cards, Foldable Practice Cards
$49.00
Language of Drums Motion Path Set - Essential Creativity and Rhythm Teaching Material for Drum Kits and Jazz Drums
$59.14
onlycook Sink Drain Basket, Faucet-Mounted Food Residue Separator and Washing Strainer - 1 Pack
$14.10
Heavy-Duty Wiper Arms and Blades for Trucks and Agricultural Vehicles - Universal Replacement Wiper Rubber Strips
$5.50
Bus Adapter FEPL-02 for ABB Variable Frequency Drive
$1,230.00
Baby National Trend Rattle Toy – Chewable Silicone, Easy-Grip Handle, Soft Sound for Early Learning
$19.90
Palace Museum Creative Stationery: Light & Shadow Graffiti Coloring Book - Exquisite DIY Children's Gift, Ancient Style Watercolor Set for Boys and Girls, Early Learning Art Toy
$29.70
Dongyi Study Room Antique Brass Water Pot, Brush Washer Basin, and Small Spoon Set for Calligraphy (3-Piece)
$33.10
![[Deposit Only] Slightly Round Mid-Heel Shoes – Matte Lambskin Puff Lolita Bow Pumps](https://www.gosteppe.com/cache/small/product/269338/legacy-main-1108a4ac9d29ca837505d228.webp)
[Deposit Only] Slightly Round Mid-Heel Shoes – Matte Lambskin Puff Lolita Bow Pumps
$38.00
Chunfei Grocery Store Yunan GR02 Gravel Bike with Thru-Axle Disc Brakes, Lightweight Touring Setup with Multiple Rack Mounts
$8,934.00
5A Natural Madagascar Rose Quartz Loose Beads, Pink Crystal Rhodonite Single Beads for DIY Jewelry Making Accessories
$0.70
Mini Portable Sketchbook - Blank Pocket Notebook for Doodling, Sketching, Watercolor, Acrylic, and Marker Art - Square Hand-Drawn Journal
$5.53
Kitchen Sink Drain Mat with Raised Slope - Splash-Proof Countertop Organizer for Faucet Areas
$9.00
Front Wheel Bearing for Hyundai Mistra - Mingtuo Brand - Also Fits Hyundai Sonata and Kia Opirus - Front and Rear Auto Bearings
$275.00
White Crystal Loose Beads Donghai Agate Gemstone Gold Rutilated Quartz Obsidian Bracelet Strand Aquamarine Amethyst Single Bead
$8.42
Kids Art DIY Stamp Kit - Round Sponge Daubers, Mushroom Head Stamps, and Paint for Graffiti
$2.44
YP8 YP-80000 Book Block Pressing Machine Supply Robust Structure Reliable Application
$23,790.00
Feileniao Four Seasons Flowers Line Drawing Atlas - Chinese Ink Painting Guide for Brush Beginners
$39.90
365 Days! Drummer Training Plan - Beginner Self-Study Guide for Drum Kits and Jazz Drums with Tutorial Audio
$55.00
New Rechargeable Electric Incense Making Machine – Compact Home Device for Extruding Coil, Sandalwood, and Stick Incense, Manual Incense Crafting Equipment
$268.00
Tire Stone Removal Hook, Multi-Function Tool with Built-in Screwdriver for Window Breaking and Self-Defense
$7.51
Pearl Sand Wax, Ice Flower Wax, Floating Aromatherapy Candle Colored Suspended Particles for Atmosphere Decor and DIY Crafts
$5.78
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
