Mercury - MercMonitor NMEA 2000 Data Level 1 Kit SmartCraft Display 79-8M0135536. Overview. The Mercury MercMonitor NMEA 2000 Data Level 1 Kit (79-8M0135536) is the base version of Mercury's popular SmartCraft display system. It provides full SmartCraft functionality, showing every available data point from compatible Mercury engines - from RPM and speed to fuel flow, trim, and more.. This version includes an integrated Active Trim interface and an NMEA 2000 Gateway (Level 1), allowing your Smar