This is a Bachmann power pack, a standard DC power pack for small to midsize duty. Or maybe you just need a small variable transformer to run some lights or accessories.
This is what you need to power that small display of N, HO, or G.
CONDITION: C8, like new. Perhaps C-9. Tested and works. Clean. Good cord. With instructions. SCROLL down into the listing past the description to see more pictures.