The DHT11 is a low-cost and reliable digital temperature and humidity sensor. Digital output only. It is compatible with Arduino complete with library as well as other microcontrollers.

• 3 to 5V Operating range
• 2.5mA (max)
• 20-80% humidity readings (up to 5% accuracy)
• 0-50°C temperature readings (up to ±2°C accuracy)
• 1 Hz Maximum sampling rate
• 15.5mm x 12mm x 5.5mm
• 4 pins with 0.1″ spacing

Pins

1. VCC

2. Data

3. NC

4. Ground