HM6010 App Based Analogue ContHOR R7293 Hornby HM6010 App Based Analogue Control Four operating accessories or point motors maybe connected to each PAC unit with the power being supplied by a seperate wall mounted transformer. It is possible to connect up to three PAC units to one transformer but this does depend on how much power is being taken by the accessories, consequently it may be necessary to add a further power unit. Power Transformer sold separately