On the chart here partial sound capabiltiy is mentioned
http://www.modelrailforum.com/forums/index...;page=DCC-Chart
Though looking at the hornby instructions online no mention of light or sound is made, if you require both on a unit an upgrade may be the be needed .
http://www.modelrailforum.com/forums/index...;page=DCC-Chart
Though looking at the hornby instructions online no mention of light or sound is made, if you require both on a unit an upgrade may be the be needed .