You install the Editor (PEP) and you will then add action
Link to button Cable-Keypad-4 (Device is Cable, Page is Keypad, and Button is '4' which contains the IR code for '4')
Delay 0.1s
Link to button Cable-Keypad-5
Delay 0.1s
Link to button Cable-Keypad-7
Do this to select 457 as the channel.
