DHT22 Temperature and high-Humidity Sensor

DHT22 Temperature and Humidity Sensor Module (AM2302) for ESP32, Arduino, or Raspberry Pi Elevate your DIY electronics and IoT projects with the DHT22 Temperature and Humidity Sensor (AM2302), a high-precision, low-cost digital sensor designed for seamless integration with microcontrollers like ESP32, Arduino, and Raspberry Pi. Whether you’re building a smart home weather station, greenhouse monitoring system, or custom IoT device, the DHT22 delivers reliable, accurate measurements of ambient temperature and relative humidity in a compact, user-friendly package. The DHT22 is a significant upgrade over the popular DHT11 (commonly found in household controllers), boasting enhanced accuracy and a wider humidity range. While the DHT11 is limited to 80% relative humidity (RH), the DHT22 can measure up to 99.9% RH, making it ideal for demanding environments like greenhouses, server rooms, or outdoor applications. Its capacitive humidity sensor and NTC thermistor ensure precise readings, while the single-wire digital interface (1-Wire protocol) simplifies setup by eliminating the need for analog inputs. Why Choose the DHT22? High Accuracy: Measures temperature from -40°C to 80°C (±0.5°C accuracy) and humidity from 0% to 99.9% RH (±2% RH accuracy). Wide Compatibility: Works flawlessly with ESP32, Arduino, Raspberry Pi, and other microcontrollers, perfect for hobbyists and professionals alike. Easy Integration: Uses a single digital pin for data output, with a minimum sampling rate of 2 seconds for stable, accurate readings. Low Power Consumption: Operates at 3.3V to 5.5V DC, drawing just 1.5 mA during measurement and less than 50 µA in standby mode. Long-Range Capability: Supports data transmission up to 20 meters, ideal for distributed IoT setups. Compact Design: Measures approximately 28 x 12 x 10 mm (varies by module), fitting easily into any project. Applications Smart Home Automation: Monitor temperature and humidity for climate control or energy efficiency. Greenhouse Monitoring: Ensure optimal conditions for plants with precise environmental data. Mushroom Cultivation: Can handle the high humidity’s in mushroom cultivation with RH>80% Weather Stations: Build your own IoT weather station with real-time data logging. Industrial Use: Track conditions in server rooms, warehouses, or labs. Educational Projects: Perfect for learning about sensors, microcontrollers, and IoT programming. Technical Specifications Feature Details Temperature Range -40°C to 80°C Temperature Accuracy ±0.5°C (typical) Humidity Range 0% to 99.9% RH Humidity Accuracy ±2% RH (typical) Supply Voltage 3.3V to 5.5V DC Current Consumption Max 1.5 mA (measuring), <50 µA (standby) Interface Single digital bus (1-Wire) Sampling Rate Minimum 2 seconds Transmission Distance Up to 20 meters Dimensions ~28 x 12 x 10 mm What’s Included 1x DHT22 (AM2302) Temperature and Humidity Sensor Module Jumper Caples: 3-wire with DuPont Connectors