Hi guys I bought 4 sets of connectable end to end 120 pc leds which are distributed/produced by Mort bay of Australia. They are 12 metres long and I intend to chop them up into 4 metre sections for my display. Nowhere on the box do they state what voltage they are and they do not come with a transformer, they simply state that they are low voltage. They have a dc plug on one end and a dc socket on the other. They say they are for use with Mort bay No 1991 adapter set but I cannot find any info on google about that either. There are 9 bulbs in a series so I am thinking perhaps they are 12v? Does anyone have any experience with these lights at all?