Below is a list of the Function keys and their assignments applicable to this model.
F0. Lights on/off
F1. Sound on/off
F2. Double Horn 1
F3. Double Horn 2
F4. Single Horn
F5. Coupling up
F6. Guards whistle
F7. Flange squeal
F8. Hydraulic cylinder clearout prior to start-up routine
F11. Shunting mode. Press once and the loco moves slowly, press it again and you are back to normal control
F12. Acceleration/Brake override. This function overrides the normal acceleration and braking settings.
F13. Aux 1
F14. Aux 2
When activating the function keys F2, 3, 4, 5, 6 , 7 and 8 you need to press the function key a second time as this resets the function so it is ready to press again when you need it.
Other sounds have been installed which come on at random such as the brake squeal when stopping, compressor noise and air pressure release. All these things add to the effect of having the real thing in miniature running in front of you, all that is missing now is the exhaust and smell!