For most purposes, these two Phidgets are the same. The newer _2 revision has the plastic enclosure, uses a different USB processor chip, and has had some optimizations and fixes.
The biggest difference is that the 1048_2B does not support our old Phidget21 libraries, so anyone who is using old software programmed with these libraries must either use the 1048_0 or rebuild the program with newer drivers. For coffee roasters this is usually not an issue since the majority of them use Artisan or Cropster, both of which use up-to-date Phidget22 libraries in their code.
