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Class121/122 Sound Decoder And Speaker (21) Dapol O Gauge Model Only


These DMU sound decoder recordings are based around the class 108 but we think the characteristic sounds are suitable for use in the Hornby class 121 bubble car. Our engineer has worked long and hard on this one and we think its a winner! Its all here, the start-up, then characteristic rattle when idling, several gearchanges as you accelerate away (not forgetting the driver-guard buzzer, door slams and whistle all on separate function keys!). Weve even incorporated a separate function for the traditional rail-joint clicks!

Out of stock


We have tested this decoder in the Dapol class 122 o gauge model, Please note this decoder is only for the Dapol O gauge Model and Not the OO Version!

Below is a list of the Function keys and their assignments applicable to this model.
F0.Directional Lights on /off
F1. Sound on/off
F2. Horn 1, two tone
F3. Horn 2, Two tone
F4. Single horn
F5. Double Door slam
F6. Singe carriage door slam
F7. Guard Whistle
F8. Guard Driver buzzer
F9. Flange Squeal
F10. Rail joint Noise (Changes with speed of train)
F11. Seagull
F12. Shift Mode 1
F13. Acceleration
F14. Switching Mode
F15. Cab lights linked to direction of travel
F16. Internal lights


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