Humidity Temperature Sensor DHT22

The DHT-22 is an affordable humidity and temperature sensor featuring a single-wire digital interface. Pre - calibrated, it needs no extra components, allowing you to quickly measure relative humidity and temperature. Key features include a 3.3 - 6V input, a 1 - 1.5mA measuring current, and a 40 - 50 uA standby current. It can measure humidity from 0 - 100% RH and temperature in the range of - 40 to 80 degrees C, with an accuracy of ±2% RH and ±0.5 degrees C.

Using the DHT22 sensor is easy. First, connect it to a power source within the 3.3 - 6V range. Once connected, it will start measuring relative humidity and temperature right away. You don't need to add any extra parts. When using, avoid exposing it to extreme conditions outside its - 40 to 80 degrees C temperature and 0 - 100% RH humidity ranges, as this may affect its accuracy. For maintenance, keep it clean and dry. If there's dust on it, you can use a soft, dry cloth to gently wipe it. Also, be careful not to apply excessive force when handling the sensor to prevent damage.