DHT22 Humidity and Temperature Sensor Module (AM2302)

Stufin

DHT22 Humidity and Temperature Sensor Module (AM2302)

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Description: 1. The DHT22 is a popular digital humidity and temperature sensor module based on the AM2302 integrated circuit. It measures relative humidity from 0% to 100% with an accuracy of ±2% RH and temperature from -40°C to +80°C with an accuracy of ±2°C. 2. This sensor uses a capacitive humidity measurement method, which provides faster response time and more stable readings compared to traditional analog methods. It also features a digital interface, making it easier to integrate with microcontrollers and other digital systems. 3. The DHT22 has a communication protocol called One-Wire Interface (1-Wire) that simplifies connections and minimizes wiring requirements, allowing the use of just two data pins for both data transfer and power supply. 4. It comes with an onboard temperature and humidity compensation feature, which ensures accurate readings even when the ambient temperature changes significantly. The sensor automatically adjusts the output signal according to the temperature, ens

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Specification	Details
Measurement Range	0-100% Relative Humidity -40°C to +80°C Temperature
Accuracy	±5% RH ±2°C (at 25°C)
Resolution	16 bits for temperature 12 bits for humidity
Communication	Analog output (VCC to Vout) digital interface via AM2302 chip (compatible with Arduino and Raspberry Pi)
Supply Voltage	3.0V to 5.5V (with internal pull-up resistor on DQ pin)
Current Consumption	Typically 70 μA at 1 Hz sampling rate
Package Size	TO-92 package approximately 4.2 x 7.6 mm
Weight	Approximately 3 grams