Touch sensor probs

First of all, I’m a total electronic newbie.

I got the arduino board and a tocuh sensor : mpx200d from Motorola.
It has 4 pins,

  1. GND
    2)+V out
  2. Vs
  3. -V out

And I don’t have a clue what that means :slight_smile:
what pin should I wire to witch part of my arduino board? And also, what resistor do I need? And should I use 9V or 5V?

I’m kind of desperate. Please help.
Help is much appreciated.