RKbus4:This is an extremely versatile little module and it has many uses 2 individual, clearly labelled circuits - A & B Uses terminal blocks so connections can be made without the need for soldering Designed and manufactured in the UK Uses a high quality, professional, double sided PCB with silkscreen layer The PCB is compact - 120x22mm The PCB has mounting holes - PCB mounting pads are included (pads are not with PCB only option) Ideal for model railway lighting and DCC circuits