;This is a single unit 4.5 volt adaptor This can be used to put a four light set of the 74276 Moonlander globes to create four lit buildings on one only transformer. This is an Australian complaint plug not the US style shown.
With one Power Supply with three outlets ( Lemax 94565 ) , you can light up to 12 buildings with these LED Moonlanders and they can be switched off or on with the switch on each LED.