Normal data connection from the ER500A to your notebook or tablet is done by a USB cable. With the addition of this module you will be able to operate your unit with no cord (wireless). Bluetooth module can be used with either windows or android.
Please Note: the ER500A GPR Unit is modified upon ordering to work with the USB cable or Bluetooth module. If you purchased it initially using only the wired connection and decide you want to use the wireless bluetooth connection later, the current ER500A must be returned for modification. Therefore we HIGHLY recommend that you order it with this option if you feel at some point this may be an important feature.