LMS/BR 10000/1 diesel sound decoder with speaker (21)

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 (long) F3. Horn (short) F4. Buffer up F5. Coupling up F6. Guards whistle F7. Carriage door slam F8. Fan F9. Flange squeal F10. Wheel/track ‘groan’ F11. Shunting mode. Press once and the loco moves slowly, press it again and you are back to normal control F12. Acceleration/Decel override. F13. Aux 1 F14. Aux 2 F15. Aux 3