code: public void switchOn(BitSet switchGroupAddress, int switchCode) {
          if (switchGroupAddress.length() > 5) {
              throw new IllegalArgumentException("switch group address has more than 5 bits!");
          }
          this.sendTriState(this.getCodeWordA(switchGroupAddress, switchCode, true));
      }
docs: Switch a remote switch on (Type A with 10 pole DIP switches)
  
  @param switchGroupAddress Code of the switch group (refers to DIP
  switches 1..5 where "1" = on and "0" = off, if all DIP switches are on
  it's "11111")
  @param switchCode Number of the switch itself (1..4)