Specification:
Power Supply: 3.1 - 5.5VDC
Temperature Range: -40 - 80C
Humidity Range: 0 - 99.9% RH
Accuracy: +/- 0.5C +/- 2% RH
Resolution: 0.1C 0.1% RH
Pin pitch: 2.54mm
Output Signal: IIC
Housing Material: PC Plastic
Net Weight: 0.5g


Example:
http://www.instructables.com/id/Connecting-AM2320-With-Arduino/

Specs: