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Grove - Temperature & Humidity Sensor Pro (DHT22/AM2302)

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101020019
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98% of 100
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Grove - DHT22 is a high accuracy temperature and humidity sensor based on the DHT22 module (also known as AM2302 or RHT03). High-cost performance and high precision make it ideal for temperature and humidity monitoring of Arduino and Raspberry Pi, you can also use it to make a thermometer and hygrometer.
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PRODUCT DETAILS

Features

  • High temperature and humidity measurement accuracy 
    • Humidity: 0 to 99.9 %RH with ±2% accuracy 
    • Temperature: -40 to 80℃ with ±0.5℃ accuracy
  • Wide range of temperature and humidity measurement
  • Ultra-low power consumption
  • 20-meter signal transmission distance
  • Factory calibrated, easy to use

Description

Grove - DHT22 is a high accuracy temperature and humidity sensor based on the DHT22 module (also known as AM2302 or RHT03). High-cost performance and high precision make it ideal for temperature and humidity monitoring of Arduino and Raspberry Pi, you can also use it to make a thermometer and hygrometer.
 
The DHT22 includes a capacitive humidity sensor and a high precision temperature sensor. The range of humidity sensor is 0 to 99.9 %RH with ±2% accuracy while the temperature sensor ranges from -40 to 80℃ with ±0.5℃ accuracy. With the help of a built-in 8-bit microcontroller, the DHT22 converts the analog output of those two sensors to the digital signal, and output both temperature and humidity data via a single pin.
 
Compared with the DHT11, this product has higher precision and wider measurement range, but the usage and code are almost the same. Simply put, if you need higher measurement accuracy, this product will be a better choice; if you need a higher price/performance ratio, then Grove - Temperature & Humidity Sensor (DHT11) may be more appropriate. The figure below lists the main differences between the two:
 
DHT22 VS. DHT11

DHT22 and DHT11 are both excellent temperature and humidity sensors and they are widely used in Arduino and Raspberry Pi projects. However, from the comparison, the DHT22 outshines the DHT11 in every aspect from temperature range, temperature accuracy, humidity range to humidity accuracy. The only downside of the DHT22 is of course the slightly higher price but you are paying for the better specs.

So if you want a sensor with a wider range and accuracy, go for the DHT22. If not, the DHT11 should work fine for your projects as well.

All in all, DHT22 is an excellent low-cost temperature and humidity module, so we made this DHT22 breakout board with Grove connector. Now it even becomes more convenient to use. Just plug and play with your Seeeduino or Grove compatible shield. We have developed more than 300 Grove modules, covering a wide range of applications that can fulfill a variety of needs.

Applications

  • Environmental monitoring
  • Thermometer and hygrometer
  • Dehumidifier

Hardware Overview 

pinout

Technical details

Dimensions 40mm x20mm x11mm
Weight G.W 11g
Battery Exclude

Part List

Grove - Temperature&Humidity Sensor Pro 1

ECCN/HTS

HSCODE 9025900090
USHSCODE 8517620090
UPC 841454107521
ROHS 1

LEARN AND DOCUMENTS

Documentations

Learn

[] Foton - The Connected Lightsaber
Foton is a special lightsaber, which can monitor temperature and humidity of a room, detect movements, and send those data to a smartphone.
[Project] Arduino Weather Station Temp, Pressure, Humidity, Windspeed
Simple weather station Arduino UNO: measures temperature, humidity, air pressure using BMP280, DHT11, windspeed 3D-printed anemometer.
[Blog] 9 Types of Temperature Sensors You Should Know
With so many temperature sensors available, how should we choose the right one for our Arduino project? Well, it really depends on several factors such as what we are measuring, the degree of accuracy we need and where we may be measuring the temperature.
[Blog] How to Pick the Best Temperature and Humidity Sensor for Your Arduino Project
Different temperature and humidity sensors have large performance differences and large price differences. So how to choose the most suitable sensor for your project?
[Blog] DHT11 vs DHT22 – Which Temperature and Humidity Sensor Should You Use?
Looking for low-cost temperature and humidity sensors? DHT11 and DHT22 are the most common temperature and humidity modules for Arduino and Raspberry Pi. DHT sensors will be perfect for you. Despite being slower than other temperature sensors, they have advantages including low power consumption and excellent long-term stability.
[] Temperature Humidity Data Logger
This project helps to monitor temperature and humidity values of a particular location along with device battery level.
[] Make your simple outdoor temp. device
Make your temp. device use wio link! The outdoor wio link check the temp. And the indoor wio link get indoor temp. and display two different temp.
[] Internet of Beer: Introducing Simple Beer Service
(This recipe is written by Todd Varland, a Solutions Architect in AWS, demonstrating how to use GrovePi+ and few Grove sensors make cool beering service their office, no need mentioned that integrated with AWS powerful cloud service. ) ...
[] AIR Quality Box
Arduino measure the various kinds of air quality data and sent it all to the electric imp through UART, imp upload these data to the Xively serve to viewing the friemdly result.
[] LinkIt ONE IoT Demo
The LinkIt ONE development board is an open source, high performance for prototyping Wearables and IoT devices.
[] Grove - Temperature and Humidity Sensor Pro
This is a powerful sister version of our Grove - Temperature and Humidity Sensor. It has more complete and accurate performance than the basic version. The detecting range of this sensor is 5% RH - 99% RH, and -40°C - 80°C. And its accuracy reaches up to

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