DHT22 Digital Temperature and Humidity Sensor

The DHT22 is a popular, low-cost digital sensor for measuring relative humidity and temperature. It uses a capacitive humidity sensor and a thermistor, which are connected to an internal 8-bit single-chip computer to output a calibrated digital signal.

Features:

• Dual Function: Measures both relative humidity and temperature in one package.
• Calibrated Digital Output: Provides a fully calibrated digital signal.
• High Accuracy: Delivers precise measurements with an accuracy of <±0.5°C for temperature and ±2%RH for humidity.
• Wide Measurement Range: Capable of measuring temperatures from -40°C to 80°C and humidity from 0% to 100% RH.
• Excellent Long-Term Stability: Highly stable with low drift, rated at ±0.5%RH per year.
• Long Transmission Distance: The digital signal can be reliably transmitted over a distance of up to 20 meters.
• Low Power Consumption: Efficient design ideal for battery-powered applications.