#2-channel operating concept

2 different operating concepts can be selected:

#Channel A or B:

Each button press sends a telegram over the KNX bus: 

* Short press: telegram for channel A.
* Long press: telegram for channel B.

#Channels A and B:

Each button press transmits, optionally, one or two telegrams over the KNX bus: a telegram for channel A on a short button press and the initial telegram for channel A followed by a telegram for channel B on a long button press.