Datasheet

Simply connect the red 3-5V power, the yellow wire to your data input
pin and the black wire to ground. Although it uses a single-wire to
send data it is not Dallas One Wire compatible! If you want multiple
sensors, each one must have its own data pin.
Compared to the DHT11, this sensor is more precise, more accurate
and works in a bigger range of temperature/humidity, but its larger
and more expensive
There is a 5.1K resistor inside the sensor connecting VCC and DATA so
you do not need any additional pullup resistors
 3 to 5V power and I/O
 2.5mA max current use during conversion (while requesting data)
 Good for 0-100% humidity readings with 2-5% accuracy
 Good for -40 to 80°C temperature readings ±0.5°C accuracy
 No more than 0.5 Hz sampling rate (once every 2 seconds)
 Body size 27mm x 59mm x 13.5mm (1.05" x 2.32" x 0.53")
 3 wires 23cm long (9")
 27mm wide x 58.75mm tall x 13.30mm deep