DHT22/AM2302 Digital Temperature Humidity Sensor Replace SHT15 Logger
Description :

• Type:DHT22/AM2302.
• Accuracy resolution:0.1.
• Humidity range:0-100%RH.
• Temperature range:-40~80℃.
• Humidity measurement precision:±2%RH.
• Temperature measurement precision:±0.5℃.

Feature:

• 4-pin package
• Ultra-low power.
• No additional components.
• Excellent long-term stability.
• All calibration, digital output.
• Completely interchangeable.
• Long distance signal transmission.
• Relative humidity and temperature measurement.

Package included : Temperature humidity sensor DHT22/AM2302

Pin Identification and Configuration

Where DHT22 Sensor is Used

The DHT22 is a commonly used Temperature and humidity sensor. The sensor comes with a dedicated NTC to measure temperature and an 8-bit microcontroller to output the values of temperature and humidity as serial data. The sensor is also factory calibrated and hence easy to interface with other microcontrollers.

The sensor can measure temperature from -40°C to 80°C and humidity from 0% to 100% with an accuracy of ±1°C and ±1%. So if you are looking to measure in this range then this sensor might be the right choice for you.

How to use DHT22 Sensor

The DHT22 Sensor is factory calibrated and outputs serial data and hence it is highly easy to set it up. The connection diagram for this sensor is shown below.

DHT12 Datasheet