ESU Sound Decoders > Sound Decoders > Class 24 sound decoder and speaker

The distinctive 'clatter' of the 24 is captured here thanks to some excellent recordings made of 24081 on the G&WR!
Below is a list of the Function keys and their assignments applicable to this model.
F1. Sound on/off
F2. Horn 1 – double tone
F3. Horn 2 – double tone, style 2!
F4. Single horn
F5. Flange squeal
F6. Coupling up to a train
F7. Flange squeal
F8. Buffer clash on wagons
F9. Shunting mode. Press once and the loco moves slowly, press it again and you are back to normal control
F10. Acceleration/Brake override, press a second time to reset
F11. Aux 1
F12. Aux 2
F0. Lights on/off (not fitted on this loco)