AM2302 DHT22 Sensor

Small 3-wire temperature and humidity sensor

(Source : Adafruit)

• Low cost
• 3 to 5V power and I/O
• 2.5mA max current use during conversion (while requesting data)
• Good for 0-100% humidity readings with 2-5% accuracy
• Good for -40 to 80°C temperature readings ±0.5°C accuracy
• No more than 0.5 Hz sampling rate (once every 2 seconds)
• Body size 15.1mm x 25mm x 7.7mm
• 4 pins with 0.1“ spacing

You can use the Adafruit DHT library.

Use the basic example from Adafruit library

• Adafruit