Raymarine ACU150 Actuator Control Unit Model: E70430 The Raymarine ACU-150 is a component of the Evolution Autopilot system and is designed to provide power and control to a Raymarine Type-1 Hydraulic Drive Unit (M81120.) The ACU-150 connects to the SeaTalkng network for communication with its other peripherals. It also has connections for an optional Rudder Reference Unit (sold separately.) The ACU-150 works on 12-volt DC systems only.