It can be used for detecting ambient temperature and humidity, through the standard single-wire interface.

Specifications

• Temperature
  • Resolution : 1°C
  • Accuracy : ±2℃
  • Measuring range : 0°C ~ 50°C
• Humidity
  • Resolution : 1%RH
  • Accuracy : ±5%RH (0~50°C)
  • Measuring range : 20%RH ~ 90%RH (25°C)
• Operating voltage : 3.3V ~ 5.5 V
• Recommended storage condition
  • Temperature : 10°C ~40°C
  • Humidity : 60%RH or below

Applications

• Weather station
• Humidity controller
• Test & detection device

How to Use

In the case of working with a MCU:

• VCC ↔ 3.3V ~ 5.5V
• GND ↔ GND
• DOUT ↔ MCU.IO

Development Resources

Wiki : www.waveshare.com/wiki/DHT11_Temperature-Humidity_Sensor