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The DHT22 (AM2302) is a digital temperature and humidity sensor offering improved accuracy and wider range compared to the DHT11. It operates at 3.3–5 V and provides calibrated digital readings via a single-wire interface. With ±0.5 °C temperature and ±2–5 % RH accuracy, it’s ideal for weather stations, greenhouse monitoring, HVAC systems, and IoT projects. Fully compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers, offering reliable long-term performance. |
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