Raymarine EV-1 Sensor Core [E70096]The EV Sensor Core At the center of every Evolution system is the intelligent EV sensor core, a 9 axis sensor that monitors vessel motion in all three dimensions. The innovative EV sensor core combines advanced solid state sensors with the Evolution autopilot processor into a single easy to install housing. Mount the EV sensor core above or below decks, the rugged enclosure is fully sealed and built to IPX6 and IPX7 waterproofing and submersion