DHT22 (AM2302) & DHT11 Temperature and Humidity Sensors

Upgrade your environmental monitoring with the DHT22 (AM2302) and DHT11 sensors! These affordable, reliable digital sensors measure temperature and humidity, making them perfect for DIY weather stations, smart home systems, greenhouses, and more. Whether you're a hobbyist or a professional, these sensors deliver accurate data for your Arduino, Raspberry Pi, or microcontroller projects.

DHT22 (AM2302) Sensor

• Temperature Range: -40°C to +80°C (-40°F to +176°F)

• Temperature Accuracy: ±0.5°C (at 25°C)

• Temperature Resolution: 0.1°C

• Humidity Range: 0% to 100% RH

• Humidity Accuracy: ±2% RH (at 25°C)

• Sampling Rate: Every 2 seconds (0.5 Hz)

• Features:

  • High precision and wide range for demanding applications.

  • Factory-calibrated for plug-and-play use.

  • Single-wire digital interface for easy integration.

  • Operates on 3.3V–5V, low power (~1.5 mA during measurement).

• Ideal For: Advanced projects needing accurate, wide-ranging measurements, such as climate control systems or outdoor weather monitoring.

DHT11 Sensor

• Temperature Range: 0°C to +50°C (32°F to +122°F)

• Temperature Accuracy: ±2°C

• Temperature Resolution: 1°C

• Humidity Range: 20% to 80% RH

• Humidity Accuracy: ±5% RH

• Sampling Rate: Every 1 second (1 Hz)

• Features:

  • Cost-effective for basic monitoring needs.

  • Factory-calibrated, simple to use with microcontrollers.

  • Single-wire digital interface, compatible with 3.3V–5V.

  • Low power consumption (~1 mA during measurement).

• Ideal For: Budget-friendly projects like indoor room monitors or simple IoT devices.

Why Choose These Sensors?

• Easy to Use: Both sensors integrate seamlessly with Arduino, Raspberry Pi, and more, using libraries like Adafruit’s DHT library. Just add a 4.7kΩ–10kΩ pull-up resistor for stable data transfer.

• Versatile Applications: Monitor temperature and humidity for home automation, agriculture, or educational projects.

• Compact & Durable: Small size fits any setup, with reliable performance for long-term use.

• DHT22 vs. DHT11: Choose the DHT22 for higher accuracy and wider range, or the DHT11 for cost-effective, basic monitoring.

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