Desiro Class 450 EMU LokSound V5 Sound DecoderDesiro Class 450 EMU LokSound V5 Sound Decoder Siemens developed four car electric multiple units called Class 450 on the Desiro platform. The vehicles, which were purchased from 2001 onwards, have an output of 1500 kW and draw their operating voltage from the side power rail next to the track. The maximum speed of the 127 vehicles is 160 km h. The four car units are used on London's busy suburban routes. Tech Specs: 1. 5 Amp maximum load Motor