Based on the same microcontroller technology as our 555-80, the MotoTron Engine Control Module (ECM) provides most of the same basic capabilities but in a smaller, more economical package. The ECU555-48 is aimed primarily at engine-only control applications and uses a smaller, 48-pin waterproof connector. Because it is based on the same microcontroller, it is capable of running the same software set used by the 555-80, albeit with slightly less I/O capacity. A single SmartCraft port is available for linking to a variety of MotoTron's electronic display and gauge products.