The DHT22, known as RHT03 in Australia, is an affordable humidity and temperature sensor featuring a single-wire digital interface. It comes pre-calibrated in a breadboard-compatible module, so you can start measuring relative humidity and temperature right away without extra components. Specifications include a type of DHT22/AM2302, an accuracy resolution of 0.1, a humidity range of 0 - 100%RH, a temperature range of -40~80℃, a humidity measurement precision of ±2%RH, and a temperature measurement precision of ±0.5℃. Features are a 4-pin package, ultra-low power consumption, no need for additional components, excellent long-term stability, all calibration with digital output, full interchangeability, long-distance signal transmission, and the ability to measure relative humidity and temperature. The package includes a temperature humidity sensor DHT22/AM2302.
Using this DHT22/AM2302 sensor is a breeze. First, connect the sensor to your breadboard or project. Since it's pre - calibrated and doesn't need extra components, you can turn on your device and start getting readings of temperature and humidity right away. When using it, keep it in an environment within its specified temperature range of -40~80℃ and humidity range of 0 - 100%RH. Avoid exposing it to extreme conditions that could damage the sensor. For maintenance, just keep it clean and dry. If it gets dirty, you can gently wipe it with a soft, dry cloth. And that's all you need to know to make the most of this handy sensor.
