Raymarine Evolution Tiller Pilot with p70s control head, ACU-100, EV1 Sensor Core, EV1 Cabling kit & Tiller DriveRaymarine Evolution Tiller Pilot with p70s control head, ACU 100, EV1 Sensor Core, EV1 Cabling kit & Tiller Drive 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 toinstall housing. Mount the EV sensor core above or