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Hornby
R8102
TTS Sound Decoder: Class 37
Hornby
R8103
TTS Sound Decoder: Class 47
Hornby
R8106
TTS Sound Decoder: Class A1/A3
Hornby
R8107
TTS Sound Decoder: Class A4
Hornby
R8108
TTS Sound Decoder - Class A1
Hornby
R8114
TTS Sound Decoder - 'Black 5'
Hornby
R8115
TTS Sound Decoder: Merchant Navy
Hornby
R8120
Twin Pack TTS Sound Decoder: Class 43 (MTU)
Hornby
R8121
TTS Sound Decoder: Class 66
Hornby
R8249
Standard DCC Decoder - 8 Pin
Hornby
R8101
TTS Sound Decoder - Class 31
Hornby
R8104
TTS Sound Decoder: Class 60
Hornby
R8113
TTS Sound Decoder: Crosti Class 9F
Hornby
R8117
TTS Sound Decoder: Princess Coronation
Hornby
R8118
TTS Sound Decoder: Class 20
Hornby
R7294
TTS Sound Decoder: Hall Class
The Hornby TTS Sound Decoder – Class 50 (Manufacturer Part Number R8123) is a digital sound unit designed for use in Hornby Class 50 model locomotives. It provides authentic engine noises, including whistle, motor, and running sounds, which are triggered automatically by the model’s speed and direction controls.
The decoder is compatible with Hornby’s Digital Command Control (DCC) system and can be fitted in the locomotive’s sound module space without the need for additional wiring. It operates on the standard 12‑V supply used by Hornby models and offers adjustable volume settings to suit different layouts.
Installation is straightforward: the decoder is mounted in the designated cavity, the speaker is positioned within the model’s body, and connections are made to the DCC track bus. Once installed, the unit delivers realistic audio performance for both hobbyists and collectors.