ESU SR/BR class 207 Thumper DEMU ESU V5 sound decoder and speaker

Below is a list of the Function keys and their assignments applicable to this model.
F0. Lights on /off
F1. Sound on/off
F2. Horn 1 – playable
F3. Horn 2 – playable
F4. Horn 3
F5. Compressor
F6. Flange squeal
F7. Double carriage door slam
F8. Single carriage door slam
F9. Guards whistle
F10. Driver/Guard communication buzzer
F11. Aux 1
F12. Aux 2
F13. Acceleration/Deceleration speed over ride.
F14. Shunting mode, Press once for half speed, press again and you are back to normal control.