The Hornby Class P2 TTS Digital Sound Decoder-R7142 is a ready-to-go pre-built sound decoder specifically designed for model railways and trains in OO gauge. With its digital control system and compatibility with DCC systems, this multicoloured decoder offers a realistic sound function for enhancing your train collection. The Hornby brand ensures quality and reliability, making this sound decoder a great addition to your model railway setup. unused, small rip on corner of box