DHT11 Humidity/temperature sensor:

Here are the key features and specifications of the DHT11 humidity sensor:

1. Measurement Range:
   • Humidity Range: 20% to 90% RH (Relative Humidity).
   • Temperature Range: 0°C to 50°C (32°F to 122°F).
2. Accuracy:
   • Humidity Accuracy: ±5% RH.
   • Temperature Accuracy: ±2°C.
3. Resolution:
   • Humidity Resolution: 1% RH.
   • Temperature Resolution: 1°C.
4. Operating Voltage:
   • Typically operates at 5V DC.
5. Output:
   • Digital signal output (single-wire communication protocol).
6. Response Time:
   • The DHT11 has a relatively slow response time, typically around 2 seconds.
7. Sampling Rate:
   • The sensor is designed to be polled at intervals of 2 seconds or more to allow for accurate readings.
8. Calibration:
   • The DHT11 is factory-calibrated, and it doesn't require additional calibration.
9. Interfacing:
   • Communicates using a simple 1-wire protocol. It sends a digital signal that needs to be read and interpreted by a microcontroller or other digital electronics.
10. Integration:
    • The DHT11 is commonly integrated into microcontroller-based projects, such as Arduino or Raspberry Pi projects, where humidity and temperature monitoring is required.
11. Housing:
    • The sensor is often enclosed in a protective plastic housing with a grid-like cover for the sensing element.
12. Limitations:
    • The DHT11 is a basic sensor and has some limitations, such as limited accuracy and a relatively narrow measurement range compared to more advanced sensors.
13. Cost:
    • One of the notable advantages of the DHT11 is its low cost, making it suitable for hobbyist and educational projects.
14. Applications:
    • Commonly used in home automation, weather stations, and various DIY electronics projects where monitoring temperature and humidity are essential.