HSS 340 Class 20 (Sound) 08 September 2020 12:34 Updated HSS 340 Class 20 (Sound) R2780XS hss_340_class_60_sound_loco_1.pdf 300 KB Download Related articles HSS 335 Class 20 Class 20 TTS Sound Decoder Send us an enquiry HSS 332B Class 43 / HST HSS 339 Princes Coronation Class