DHT22 AM2302 Temperature Humidity Sensor Module for Arduino
DHT22 AM2302 Temperature Humidity Sensor Module for Arduino
GUANDO DHT22 / AM2302 Digital Temperature & Humidity Sensor Module
Take the guesswork out of environmental monitoring with the GUANDO DHT22 (AM2302) Digital Temperature & Humidity Sensor Module. Engineered for makers, hobbyists, and engineers alike, this ultra-low-power, high-precision 4-pin sensor board plugs directly into your Arduino (Uno R3 and compatible), Raspberry Pi, or any microcontroller project — no additional components required. Get reliable, calibrated digital readings right out of the box.
Why Choose This Sensor Module?
- High Precision Readings: Temperature accuracy of ±0.5°C and humidity accuracy of ±2%RH ensure you can trust every data point.
- Wide Measurement Range: Covers temperatures from -40°C to 80°C and humidity from 0% to 99.9% RH — ideal for indoor and outdoor environmental monitoring.
- Ultra-Low Power Consumption: Runs efficiently at 3V–5.5V, making it perfect for battery-powered and energy-sensitive projects.
- 16-Bit Resolution: Delivers highly granular data (0.1 resolution) for precise environmental tracking and data logging.
- Fully Calibrated Digital Output: All sensor calibration is handled internally — readings come out as clean digital signals with no analog-to-digital conversion needed on your end.
- Long-Distance Signal Transmission: Stable digital signal over longer cable runs, giving you flexible installation options.
- Completely Interchangeable: Consistent performance across units means you can swap sensors in multi-sensor setups without recalibration.
- Excellent Long-Term Stability: Built to maintain measurement accuracy over extended operational periods.
- Simple 4-Pin Interface: Easy wiring for beginners and experienced developers alike — no extra resistors or breakout boards required.
Technical Specifications
| Model | DHT22 / AM2302 |
| Output | Digital Signal |
| Temperature Range | -40°C to 80°C |
| Temperature Accuracy | ±0.5°C (max ±1°C) |
| Humidity Range | 0% to 99.9% RH (0°C–50°C) |
| Humidity Accuracy | ±2% RH |
| Resolution | 16-bit (0.1 precision) |
| Sampling Period | 2 seconds |
| Working Voltage | 3V – 5.5V |
| Pin Count | 4-pin package |
| Sensor Type | Resistance Sensor |
| Material | Metal |
| Origin | Made in Mainland China |
What's in the Box?
- 1 × AM2302 / DHT22 Temperature and Humidity Sensor Module
Perfect For
- Arduino & Raspberry Pi DIY projects
- Home automation and smart environment systems
- Greenhouse and grow room climate monitoring
- Weather stations and data logging
- HVAC monitoring and control systems
- Industrial and laboratory environmental sensing
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: Is the DHT22 AM2302 sensor compatible with Arduino Uno R3 and other microcontrollers?
A: Yes! The DHT22 / AM2302 digital temperature and humidity sensor module is fully compatible with Arduino Uno R3, Arduino Mega, Raspberry Pi, ESP8266, ESP32, and most 3.3V–5V microcontroller boards. Its standard 4-pin interface and single-wire digital output make integration straightforward with widely available libraries.
Q: Do I need extra components or a resistor to use this DHT22 sensor module?
A: No additional components are required. The module board comes ready to connect directly to your microcontroller's digital pin, power, and ground. Some projects may optionally add a 10kΩ pull-up resistor on the data line for longer cable runs, but for standard connections it works plug-and-play.
Q: What is the sampling rate of the DHT22 AM2302 temperature and humidity sensor?
A: The DHT22 / AM2302 sensor has a sampling period of 2 seconds, meaning it provides a new temperature and humidity reading every 2 seconds. This makes it well-suited for environmental monitoring applications where near-real-time data is important without overwhelming your microcontroller.
Q: What is the difference between DHT22 and AM2302?
A: The DHT22 and AM2302 are functionally identical sensors — they share the same measurement specifications, communication protocol, and pin layout. The AM2302 is simply the OEM/manufacturer part number for what is commonly marketed as the DHT22. They are completely interchangeable in your projects.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.