It is powered by two AA batteries,
If it is powerred by two AA batteries and then it conumes 200ma, you would have been replacing the batteries every few hours.
Again, before you try to figure something out, spend sometime understanding the characteristics of your device would save you lots of trouble down the road.
In fact, I am not sure about this, I only have read it somewhere but I think I messed up. I think too that 200mA is way too much, but I can't know how to figure it out. I can only see that if i plug to the + button the 11 pin of the arduino, the display is messed up, and if I place to the + pole the 3.3V of the arduino, everything works just fine.
Then, connect the + pin to arduino through a 1k resistor and you can measure the voltage drop on that 1k resistor to get some sense as to how much current it is drawing.