DHT22 Temperature and Humidity Sensor

• The DHT22is 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.

Pin Configuration

• Pin 1(Vcc) Power supply 3.5V to 5.5V
• Pin 2(Data)Outputs both Temperature and Humidity through serial Data
• Pin 3(Gnd)Connected to the ground of the circuit

Applications

• Measure temperature and humidity
• Local Weather station
• Automatic climate control
• Environment monitoring