Raymarine Evolution ACU150 Hydraulic Autopilot System Pack w/ p70R Control Head ACU-150 EV1 Sensor Core Evolution Cabling Kit 12v Hydraulic Pump. EV-150 system is engineered specifically to meet the needs of small to medium sized hydraulically steered vessels w/ a steering ram capacity between 4.9 cu. in.( 80cc) and 14.0 cu in (230cc). The EV-150 system is for 12-volt DC electrical systems only. The EV-150 System Pack Contains: EV1 Sensor Core ACU-150 Actuator Control Unit p70R Autopilot Control Head (Power) Type 1 Hydraulic Pump (12V) Evolution Cabling Kit. Designed for small to medium sized vessels w/ hydraulic steering. Package Contents: Raymarine Evolution ACU150 Hydraulic Autopilot System Pack Raymarine T70330: Evolution ACU150 Hydraulic Autopilot System Pack w/ p70R Control Head ACU-150 EV1 Sensor Core Evolution Cabling Kit 12v Hydraulic Pump