DHT11 through 4 pin, how plug & program

Dear guys I'm a new user of Arduino.

My friends and me are planning a simple model of home automation and we bought some sensors including the temperature and humidity, precisely the DHT11 http://www.seeedstudio.com/depot/twig-temphumi-sensor-p-745.html But I noticed that contrary to the others, it has got 4 pins, not 3 pin. And It's marked as Vcc, GND, SIG and NC. You may kindly refer to how I connect it to Arduino and have a code to try and collect data. Excuse me but we are very inexperienced and I would like your help. If you want more information just ask. Thank you in advance. :)

P.S.: excuse me for the bad english :grin:

NC usually means Not Connected, does that help?

Cheers, Kari

check - http://arduino.cc/playground/Main/DHT11Lib - or - http://arduino.cc/playground/Main/DHTLib - library with small sample code.

tuxj: You may kindly refer to how I connect it to Arduino and have a code to try and collect data. Excuse me but we are very inexperienced and I would like your help. If you want more information just ask. Thank you in advance. :)

Here is a link for another topic, if I can work with this, you can... http://arduino.cc/forum/index.php/topic,58531.0.html

:)

Cheers, Kari

:grin: Thank you very much :stuck_out_tongue_closed_eyes: