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Hornby TTS Sound Decoder – Class 08 is a model railway component designed for OO gauge locomotives. The decoder measures 262 mm in length and comes in a painted multi‑colour finish. It is supplied by Hornby, which is both the designer and operator, and carries the manufacturer part number R7146.
The decoder supports both long and short decoder addresses and includes adjustable acceleration and deceleration settings. It provides two sound channels, allowing the playback of full locomotive sounds, including bells, wagon couplings and brakes.