DHT22 Humidity and Temperature Sensor:

The DHT22 Humidity and Temperature Sensor is a high-performance digital sensor designed for precise temperature and humidity measurements. It is widely used in IoT projects, home automation systems, weather monitoring stations, industrial applications, and HVAC systems.

With an accuracy of ±0.5°C for temperature and ±2% for humidity, the DHT22 sensor provides reliable data for climate control, environmental monitoring, and data logging applications. It operates on a single-wire communication protocol, making it easy to interface with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers.

This sensor is an upgraded version of the DHT11, offering better accuracy, wider measurement range, and improved stability. It is ideal for scientific experiments, greenhouses, weather prediction, and smart home applications.

🔧 Key Features & Benefits:

✔ High Accuracy & Precision: Measures temperature with ±0.5°C accuracy and humidity with ±2% accuracy, ensuring precise environmental data.
✔ Wide Measurement Range: Capable of measuring temperature from -40°C to 80°C and humidity from 0% to 100% RH, making it suitable for various environments.
✔ Digital Output: Uses single-wire communication for easy integration with microcontrollers like Arduino, Raspberry Pi, and ESP8266.
✔ Low Power Consumption: Ideal for battery-powered IoT devices, enabling long-term deployment with minimal energy use.
✔ Fast Response Time: Ensures real-time temperature and humidity monitoring, crucial for climate control and industrial automation.
✔ Stable & Durable Performance: Designed for reliable operation in harsh environmental conditions, such as high humidity and extreme temperatures.
✔ Compact & Lightweight: Small form factor makes it perfect for embedded applications and portable weather stations.

Technical Specifications:

🔹 Model: DHT22 (AM2302)
🔹 Temperature Range: -40°C to 80°C
🔹 Temperature Accuracy: ±0.5°C
🔹 Humidity Range: 0% to 100% RH
🔹 Humidity Accuracy: ±2% RH
🔹 Operating Voltage: 3.3V to 5V DC
🔹 Power Consumption: Low power, <2.5mA during measurement
🔹 Output Signal: Digital (Single-Wire Communication)
🔹 Sampling Rate: 0.5 Hz (1 reading every 2 seconds)
🔹 Dimensions: 27mm x 59mm x 13.5mm

⚡ Applications of DHT22 Sensor:

✅ Weather Stations: Monitor temperature and humidity trends for weather prediction.
✅ IoT Smart Homes: Automate air conditioning, humidifiers, and fans based on real-time data.
✅ HVAC Systems: Ensure optimal indoor climate control in buildings and industrial setups.
✅ Greenhouses & Agriculture: Maintain ideal conditions for plant growth and farming automation.
✅ Data Logging & Research: Record environmental changes for scientific experiments and industrial analysis.
✅ Industrial Automation: Control manufacturing processes based on real-time temperature and humidity readings.
✅ Medical Applications: Use in hospitals and labs for maintaining precise environmental conditions.

🛠 How to Use the DHT22 Sensor?

1️⃣ Connect the DHT22 sensor to your Arduino, Raspberry Pi, or any microcontroller.
2️⃣ Use a 10kΩ pull-up resistor between the data and power lines for optimal performance.
3️⃣ Implement DHT sensor libraries to read temperature and humidity data.
4️⃣ Display or log data for monitoring, control, and automation applications.

For more high-quality temperature and humidity sensors, visit:
➡ ElectroWay Sensors Collection