I should clarify that bluetooth devices can have different ranges, a vast majority of which operate in a limited range 10ft. The version refers to the protocol being used to transmit the data which has nothing to do with range. The class of the device refers to the range that it has. I am pretty sure that cellphones do not transmit 200 ft.

Hopefully you can purchase a device adapter that allows for selection of the signal strength like with 802.11 wireless.

refer to this link : http://en.wikipedia.org/wiki/Bluetooth

I had not read BenjaminSerrato's post earlier in the thread, I do not mean to repeat ideas. I do not have any specific experience with this. I will defer to others.