DCD-VP-ZN8H.2 Zen Blue+ Decoder: 8 Pin NANO Wired 2 Function (5-pack)When the loco has NO space, this decoder may still fit easily! The ZN8H. nano is remarkably small! We started off with the worlds smallest, then shrunk it even more! With the same footprint as NANO 8 pin direct, we added wires and shrunk it in thickness by nearly 50% to create a super small go anywhere wired decoder. Zen decoders feature high end Swiss Microprocessors and our decoder software has always been super smooth, clever and easy to use but