DHT22 (AM2302) Digital Temperature and Humidity Sensor

Description

• Power supply: 3.3-6V DC
• Output signal: digital signal via single-bus
• Sensing element: Polymer capacitor
• Operating range:
  • Humidity 0-100%RH
  • Temperature -40~80 Celsius
• Accuracy: humidity +-2%RH (Max +-5%RH); temperature <+-0.5Celsius
• Resolution or sensitivity: humidity 0.1%RH; temperature 0.1Celsius
• Repeatability: humidity +-1%RH; temperature +-0.2Celsius
• Humidity hysteresis: +-0.3%RH
• Long-term Stability: +-0.5%RH/year
• Sensing period: Average 2s