Thank you for viewing. KATO Power Supply Standard S, ideal for N gauge. - Model: Standard S - Part Number: 22-012 - Function: Power supply - Color: Blue Manufacturer... KATO Type... Power unit/Controller Model..... No. 22-012 There are scratches, please see the images. Power-on has been checked. The images show the power is on. Operation has not been checked, so please understand and consider before purchasing.