BR class 40 XL sound decoder

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 F3. Horn 2 F4. Horn 3 F5. Buffer up F6. Coupling up F7. Flange squeal F8. Buffer clash on shunting trucks (8 seconds long!) F9. Shunting mode F10. Accelleration/Decelleration. Press once to over ride, press again to cancel. F11. Aux 1 F12. Aux 2