About this item
π‘οΈ DHT22 Temperature & Humidity Sensor Module
π‘ High-Accuracy Digital Sensor for Environmental Monitoring
The DHT22 (also known as AM2302) is a premium digital temperature and humidity sensor with superior accuracy and wider measurement ranges compared to the DHT11. It delivers calibrated, digital output via a single-wire interface, making it ideal for high-precision applications.
π‘οΈ Industrial-Grade Reliability
- π Long-term stability and accurate sensing
- π Factory calibrated digital signal
- π Single-wire data interface (easy integration)
- β‘ Wide voltage support: 3.3V to 6V
π¦ Precise & Powerful
The DHT22 offers higher resolution, better accuracy, and broader measurement ranges. Itβs great for both hobby and professional applications that demand more reliable environmental sensing.
π οΈ Applications
- π Home and industrial automation
- π‘οΈ Smart thermostats and HVAC control
- π± Precision agriculture and greenhouses
- π¦ Weather stations and environmental monitors
- π± IoT devices with climate data logging
β οΈ Notes
- π Minimum sampling interval: 2 seconds
- π Compared to DHT11, this sensor provides higher accuracy and range
- π§ Requires external pull-up resistor (~10kΞ©) on data pin if not onboard
- π¨ Humidity is capacitive, temperature is thermistor-based
β¨ Key Features
- π‘οΈ Temperature range: -40Β°C to +80Β°C (Β±0.5Β°C)
- π§ Humidity range: 0β100% RH (Β±2β5% RH)
- π Sampling rate: Once every 2 seconds
- π Operating voltage: 3.3V β 6V
- π Module dimensions: ~15.5mm x 12mm x 5.5mm
π Useful Links