DHT22 Digital Temperature and Humidity Sensor Module – AM2302
📝 Description:
If you’re planning to build a device that monitors temperature and humidity, the DHT22 (AM2302) is the ideal sensor for you. It’s a low-cost, high-precision digital sensor that combines a capacitive humidity sensor and a thermistor. The DHT22 outputs a calibrated digital signal, eliminating the need for analog input pins or extra components.
Although it provides accurate results, the sensor can only output new data once every 2 seconds, so values may be slightly delayed. It’s easy to integrate with microcontrollers like Arduino, ESP32, or Raspberry Pi.
⭐ Features (Short & Clear):
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🌡️ Measures both temperature and humidity
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💯 High accuracy and stability
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🧪 Calibrated digital output
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⚡ Low power consumption
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🔧 No external components required
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🧠 Fully compensated and factory calibrated
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🔌 Long-distance signal transmission
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🔁 Fully interchangeable, 4-pin module
📐 Specifications:
Parameter | Value |
---|---|
Temperature Range | -40°C to +80°C |
Temperature Accuracy | ±0.5°C |
Humidity Range | 0% to 100% RH |
Humidity Accuracy | ±2–5% RH |
Output | Digital signal (single-wire) |
Update Interval | 1 reading every 2 seconds |
Operating Voltage | 3.3V to 6V DC |
Max Current | ~2.5mA during data transmission |
Dimensions | ~28mm x 12mm x 10mm |
📦 Package Includes:
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✅ 1 x DHT22 Digital Temperature and Humidity Sensor Module (AM2302)