Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | AM2301A / DHT21 |
| Interface Type | Single-Wire Digital |
| Humidity Range | 20% to 90% RH |
| Temperature Range | -40°C to 80°C |
| Humidity Accuracy | ±5% RH |
| Temperature Accuracy | ±0.5°C |
| Operating Voltage | 3.3V to 5.5V DC |
| Sampling Period | 2 seconds |
| Pin Count | 3 Pins (VCC, Data, GND) |
| Package Type | Through-Hole Module |
Anonymous
Mar 21, 2026
Rating: 5/5
Perfect for Arduino projects
This sensor works flawlessly with my Arduino Uno. The single-wire interface makes wiring incredibly simple, and the readings are consistent when compared to my standalone hygrometer.
Anonymous
Mar 21, 2026
Rating: 4/5
Good for indoor plant monitoring
I used this to monitor humidity in my greenhouse controller. It's accurate enough for general purposes, though it takes a few seconds to stabilize after power-on.
Anonymous
Mar 17, 2026
Rating: 4/5
Solid performance
Works well inside my smart home enclosure. Just remember not to sample faster than once every 2 seconds or you will get null values.
Anonymous
Mar 08, 2026
Rating: 5/5
Reliable and cost-effective
Great replacement for the older DHT11. The improved accuracy and wider temperature range make it suitable for more serious environmental logging applications.
Anonymous
Mar 03, 2026
Rating: 5/5
Easy to code for
Found plenty of libraries online to get this running with ESP32 immediately. No calibration needed out of the box for my science fair project.
Anonymous
Mar 03, 2026
Rating: 5/5
Exactly as described
Arrived quickly and matched the pinout diagram perfectly. The module form factor saves time compared to soldering the raw sensor component.
Q: What is the maximum cable length recommended?
A: For reliable data transmission, we recommend keeping the cable length under 20 meters. Longer distances may require signal buffering.
Q: Does this come with a waterproof casing?
A: No, this specific model is not waterproof. If you need outdoor usage, please look for our DHT22 models with specialized protective housings.
Q: Can I power this with 3.3V logic?
A: Absolutely. The operating voltage range is 3.3V to 5.5V, making it safe for both 3.3V and 5V microcontroller systems.
Q: Is this compatible with Raspberry Pi GPIO?
A: Yes, it is fully compatible with Raspberry Pi. You will need a pull-up resistor on the data line, which many breakout modules already include.
Q: How often should I calibrate this sensor?
A: The AM2301A/DHT21 is factory calibrated and typically does not require user recalibration during its standard lifespan under normal conditions.
Rubber Wheel Chock 460x180x160 Anti-Slip Triangular Wedge
$354.33
Household Small Range Hood Portable USB Desktop Smoke Extractor for Living Room Hot Pot BBQ Odor Removal Mini Fume Extractor
$39.00
Household Water Dispenser Stand - Multi-Tier Floor Rack for Bottled Pure Water and Mineral Water in Offices
$129.74
WYPALL* Microfiber Cleaning Cloths Yellow 83610, 6 Sheets/Pack * 4 Packs/Case
$132.76
Ceramic Ink Dish, Water Dish, Brush Rest, Ice-Crack Ink Box, Multi-Function Brush Washer, Ink Stone, Brush Holder, and Kung Fu Tea Cup
$1.90
Car Tire Stone Removal Hook, Foldable and Extendable Tool for Extracting Pebbles from Treads
$2.07
Touchscreen Waterproof Phone Pouch for Swimming and Rafting, Sealed Bag for Beach, Sand, Snorkeling, and Underwater Photography
$5.53
Chunfei Grocery Store Yunan GR02 Gravel Bike, Thru-Axle, Mechanical Disc Brakes, Lightweight Touring Setup with Multiple Rack Mounts
$6,441.00
Electric Guitar Tutorial for Beginners - 7-Week Self-Study Plan with Exercises, Corrections, and Materials
$219.00
Professional Bathtub-Style Brush Washing Set - Cute 3-Piece Watercolor and Chinese Painting Brush Cleaner with Palette
$11.80
![[Sold Out & Discontinued - Display Only] Radish Defense ABO20.0 Spring Tour Series Blind Box Figure](https://www.gosteppe.com/cache/small/product/269201/legacy-main-5af4651a8d30dc42d9412600.png)
[Sold Out & Discontinued - Display Only] Radish Defense ABO20.0 Spring Tour Series Blind Box Figure
$16.90
Ebru Marbling Plastic Tool Kit – Needles, 3-Prong Combs, Cones, Straws, and Droppers for Peacock Patterns
$1.28
CANDLE.LAB | Silicone Border Mat for DIY Scented Candles and Soap Making Tray Mold
$32.00
Shiji Runde Coal Shed Mine Dust Removal Explosion-Proof Anti-Freezing Fog Cannon Port Dust Suppression 80m Ultra-Fine Industrial Fog Machine
$4,180.00
Mobile Retractable Spray Booth for Furniture - Foldable Track-Mounted Painting Room
$6,240.00
Long Handle Bristle Paint Brush - Hog Hair Brush for Oil Painting, Acrylic Wall Art, and Children's Drawing
$1.80
Electrostatic Powder Coating Equipment and Electronic Powder Dispenser Supply
$17,250.00
DIY Toast-Shaped Silicone Mold for Handmade Soap - Square Soap Making Mold
$105.00
Kindergarten Sponge Stamp Set – Mushroom-Head Circular Printing Tools for Kids' DIY Art and Painting Kits
$3.50
Heavy-Duty Lifting Chain Set – Manganese Steel Chains with Hooks, Rings, and Hoist Accessories
$198.00
Car Tire Stone Removal Tool, Multi-Function Groove Hook for Portable Tire Picking and Cleaning
$11.50
m Dogs Strap Auto Retractable Dual Dog Leash With
$199.92
Traditional Wooden Sheepskin Rattle Toy – Safe for Teething Newborns, Handcrafted Baby Bell Shaker
$17.80
Soilless Cultivation Equipment Plant Factory Display Rooftop Hydroponic Pipe System for Leafy Vegetables and Fruits, Type A Planting Rack
$2,620.16
Premium Ceramic Tea Canister and Gift Box Set - Empty Packaging for Black Tea, Pu'er, White Tea, and Biluochun
$121.00
Posture-Correcting Hole-Grip Pencils for Grade 1 - Triangular Barrel, Break-Resistant, Non-Toxic HB for Daily Writing and 2B for Exams
$3.02
Genuine OEM AC Blower Motor Heater Fan for Buick Excelle GT, Cavalier, and Monza
$255.00
TA1 TA2 Titanium Capillary Tubes - Small Diameter Titanium Pipes - GR5 Titanium Alloy Tubes
$240.00
Industrial Spray Painting Wipe Cloth Auto Bake Finish Film Application Degreasing Cloth Non-Woven Absorbent Paper Lint-Free Paper Electrostatic Dust Removal Paper
$75.66
US Standard Buttress Thread Inserts 22ER 16ER 11NR 16 10 12 8ABUT Internal 7 External 45 Degree
$43.20
![[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)
