DFRobot - Gravity: DHT22 Temperature & Humidity Sensor

The DHT22 module is a capacitive humidity and temperature sensor with high reliability and stability, offering fast response, strong anti-jamming, and cost-effectiveness.

DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound that has been calibrated digital signal output of the temperature and humidity sensors. Application of dedicated digital module collection technology and temperature and humidity sensing technology to ensure that the product has high reliability and excellent long-term stability.

Figure: Gravity: DHT22 Temperature & Humidity Sensor

For new I2C projects, DHT20, AHT20, or SHT40 sensors are recommended for easier wiring, modern interface support, and stronger long-term upgrade paths.

The sensor includes capacitive wet components and high-precision temperature measurement devices and is connected to a high-performance 8-bit microcontroller. The product has excellent quality, fast response, strong anti-jamming capability, and cost-effectiveness.

Standard single-bus interface, system integration quick and easy. Its small size, low power consumption, and signal transmission distance of up to 20 meters make it the best choice of all kinds of applications and even the most demanding applications. DHT22 has higher precision and can replace the expensive imported SHT10 temperature and humidity sensor. It can measure the environment's temperature and humidity to meet high demand.

The product has high reliability and good stability. If it's used and combined with a special sensor Arduino expansion board, it will be easily implemented the interactive effect related to the temperature and humidity perception.

Note: The DHT22 digital temperature and humidity sensor is designed for analog sensor interfaces. The analog port will be used as the digital, which will not occupy the original digital port of the Arduino. The lines of the sensor can transform the analog function to digital that can be used on the digital port.

Selection Guide

Product Name

Gravity: DHT11 Temperature & Humidity Sensor For Arduino

Gravity: DHT20 Temperature & Humidity Sensor for Arduino

Gravity: DHT22 Temperature & Humidity Sensor

Figure

SKU

DFR0067

SEN0497

SEN0137

Communication Method

One wire

I2C

One wire

Operating Voltage

3.3-5V

3.3-5V

5V

Temperature range ± error

0~+50 ± 2 ℃

-40~+80 ± 0.5℃

-40~+80 ± 0.5℃

Humidity range ± error

20~90% ± 5%RH

0~100% ± 3%RH

0~100% ± 2%RH

Introduction

Classic temperature and humidity sensor, low price, suitable for designs with low accuracy requirements

High-precision temperature and humidity sensor, DHT11 upgrade version, the same price but improved performance, using I2C communication, data is more stable

High-precision temperature and humidity sensor, high price, high detection range and accuracy

Add to Cart

• The DHT22 module is a capacitive humidity and temperature sensor with high reliability and stability, offering fast response, strong anti-jamming, and cost-effectiveness.
• Supply Voltage: 5V
• Temperature Range: -40-80℃ / resolution 0.1℃ / error
• Humidity Range: 0-100% RH / resolution0.1%RH / error ±2%RH
• Size: 38 x 20mm (1.50 x 0.79")

• Arduino projects
• STEM education
• Robotics prototypes
• Environmental monitoring
• Home automation
• Data logging experiments

• Supply Voltage: 5V
• Temperature Range: -40-80℃ / resolution 0.1℃ / error
• Humidity Range: 0-100% RH / resolution0.1%RH / error ±2%RH
• Wiring map: VCC, GND, S
• Size: 38 x 20mm (1.50 x 0.79")

• DHT22 sensor   x1
• Analog sensor cable   x1