Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | AHT21/GXHT30 |
| Output Type | Digital I2C |
| Temperature Range | -40°C to +85°C |
| Humidity Range | 0% to 100% RH |
| Accuracy (Humidity) | ±2% RH |
| Accuracy (Temperature) | ±0.3°C |
| Supply Voltage | 2.4V to 5.5V DC |
| Response Time | < 8 seconds |
| Package Type | DFN Package |
| Application | HVAC, Smart Home, Industrial Monitoring |
Anonymous
Mar 27, 2026
Rating: 5/5
Reliable humidity tracking
I installed ten of these in my greenhouse automation system. They have been running for three months without drift or failure. Highly recommended for agricultural monitoring.
Anonymous
Mar 25, 2026
Rating: 4/5
Solid performance in varying conditions
Used this in a server room monitor. It handles the temperature fluctuations well. Response time is decent, though not instant, which is expected for this class of sensor.
Anonymous
Mar 19, 2026
Rating: 4/5
Great value, small footprint
Excellent sensor for the price. The only reason for 4 stars is that the pins are quite small, so you need a steady hand for soldering if you aren't using a breakout board.
Anonymous
Mar 13, 2026
Rating: 5/5
Easy library support
Found plenty of existing libraries for ESP32 and Raspberry Pi. Got it up and running in under 10 minutes. The data output is consistent and clean.
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect for my weather station project
These sensors are incredibly accurate and easy to interface with an Arduino. The I2C communication is stable, and the readings match my calibrated reference meter almost perfectly.
Anonymous
Mar 03, 2026
Rating: 5/5
Best in class for hobbyists
We bought a bulk pack for our workshop. Every single unit worked out of the box. The precision is impressive compared to older DHT11 modules we used previously.
Q: Does this come with a breakout board or just the chip?
A: This listing is for the raw sensor module as pictured. If you need a breakout board with headers for easier breadboarding, please check our related accessories section.
Q: What is the I2C address for this sensor?
A: The default I2C address is typically 0x38, but please refer to the datasheet included in the download section for configuration options.
Q: How often should I calibrate this sensor?
A: These sensors are factory calibrated. Under normal operating conditions, they maintain accuracy for years without needing recalibration.
Q: Is this compatible with 3.3V logic levels?
A: Yes, the AHT21/GXHT30 operates between 2.4V and 5.5V, making it fully compatible with both 3.3V and 5V microcontrollers.
Q: Can this be used outdoors directly?
A: The sensor itself is not waterproof. For outdoor use, it must be housed in a breathable enclosure that protects against rain while allowing air circulation.
Commercial 1.8/2.2m Food Warmer Cabinet for Fried Chicken and Burger Shops, French Fry Heating Unit, 1.5m Two-Way Pickup Display Case
$3,573.50
Commercial Electric Heated Stainless Steel Fast Food Serving Counter Soup Warmer Buffet Cart
$842.00
Natural Crystal White Azeztulite Loose Beads with Rainbow Luster for DIY Necklaces, Bracelets, and Jewelry Making
$5.54
Ai Zao Fang Six-Cavity Oval Totem Handmade Soap Silicone Mold - Yields Approx. 115g per Bar
$17.70
Zunjue Wire-Bound 8K Watercolor Notebook 300g Watercolor Sketchbook Loose-Leaf Portable 16K Water-Soluble Colored Pencil Notebook Coil-Bound 32K Medium Coarse Fine Grain 200g Kids Students A4 Watercolor Notebook Plein Air Sketch Drawing Book
$7.65
Yuan Dynasty Calligraphy by Zhao Mengfu - Small Regular Script Diamond Sutra Brush Tracing Long Scroll Copybook, Original Version, Wholesale and Customization Available
$15.00
Kodak Photo Printing Service - High-Definition Prints from Your Phone with Lamination and Album Binding
$12.47
Shenzhen Custom Storefront Signage and Lightbox Installation - Illuminated Letters and Shop Plaques
$50.00
Automotive AC Refrigerant Gauge Set – R134a Pressure Meter with Dual Valve Tool for Home R22/R410 Air Conditioning Systems
$329.00
Complete Collection of Taoist Talisman Art Copybooks - Zhengyi Thirty-Six Generals, Calligraphy Practice Sheets with Stroke Order and Red Tracing, Classic Taoist Calligraphy
$38.00
Marie's Blending Knife Replacement Head Set Sketch Blending Tools Sponge Stumps Paper Stumps for Art Students
$4.25
French Imported Arches Watercolor Paper - Handmade 100% Cotton, 300g-850g, Medium/Rough Grain, Extra-Large Rolls and Sheets (4K, Full, Half, Quarter)
$33.10
Commercial Countertop Food Warmer Display Case - For Fried Chicken, Burgers, Egg Tarts, Pies, Youtiao, and Shaobing
$720.00
Integrated Hospital Wastewater Treatment Unit Underground Integrated Sanitary System Sewage Discharge Unit Eco-Friendly Wastewater
$10,000.00
Double Loop Lifting Chain with Rebar Bottom Hook - Manganese Steel Sling for Heavy Duty Rigging
$29.00
Screw Press Screw Sludge Dewatering Machine Sewage Treatment Equipment Rotary Type
$17,600.00
Imported INA Needle Roller Bearings: 9NA, NA 2940, 4R22, 4924, 4926, 4928, 4930-XL A
$109.00
High-Purity Nitrogen Generator for Reflow Soldering and Wave Soldering - Efficient Energy-Saving Transformer Protection for Electronics Factories
$46,100.00
Baohong Watercolor Paper 300g Wood Pulp Medium Grain A3 Full Sheet, Coarse/ Fine Grain Academy Grade 4K, A2, A1, A4 Artist Paper 2K for Art Students
$3.40
Manyue Handmade Natural Soy Wax and White Beeswax for DIY Low-Temperature Scented Candles – Includes Candle Cups and Jelly Wax
$5.46
Car Tire Stone Removal Tool Hook and Rake for Cleaning Tread Debris
$4.53
Caiyan Blending Sticks for Oil Pastels and Sketching, Dual-Tip Soft Wax Crayon Tools for Art Students, DIY Smudging, Highlighting, and Color Mixing
$8.20
Aizaofang Six-Cavity Leaf Stamp Silicone Mold for DIY Handmade Soap, Approx. 108g per Bar
$16.90
Sea to Summit Outdoor Rafting Waterproof Dry Bag Storage Backpack for Clothes, Large River Waterproof Bag 420D
$83.30
Natural 5A Gold Rutilated Quartz Loose Beads - DIY Crystal Jewelry Making Supplies, Round Single Beads
$2.56
Rubber Cable Raceway and Speed Bump with Movable Cover
$31.44
Manufacturer Shaftless Conveyor Uniform Transport No Backflow Customizable Sizes Two-Year Warranty
$7,455.00
Curved Commercial Steamed Bun Machine - Small Glass Display Cabinet for Convenience Stores, Mantou Warmer, Baozi Steamer, Corn Warmer
$338.00
U-Shaped Rubber Sealing Strip, N-Edge Rubber Strip, Edge Wrapping Strip, Iron Sheet Decorative Strip, Rubber Edge Sealing Strip
$102.00
Rongbaozhai Calligraphy Felt Mat - Creative Printed Desk Pad for Brush Writing and Chinese Painting
$14.20
![[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)
