Bennett V351HPU1 Hydraulic Power Unit - 12 Volt Compact powerhouse that creates hydraulic pressure to lower and raise the trim tabs Employs two solenoid valves to direct the flow of fluid to the actuators Solenoid valves lock tightly to secure the tabs in place Lexan cover protects electrohydraulic unit from occasional wash down and translucent reservoir allows fluid check at a glance 12 Volt power