What are the differences in DIP Switch setting between the legacy and new BR20s?

The configuration for DIP S1 did not change between the legacy and new styles. DIP switch S3 only replaced the four solder tabs; labeled A, B, C and D, on the legacy style.
Only solder tab A or DIP switch S3, position 4, is defined.
  • Tab A: open = keypad data sent in ASCII, shorted = keypad data sent in 8-bits (4-bits and its compliment).
  • S3, position 4: ON = keypad data sent in ASCII, OFF = keypad