Bennett AP000A1BC Pro Auto Trim Tab Switch for BOLT Trim Tab Systems Bennetts Auto Trim Pro is an all-in-one trim tab control system combining a myriad of essential features Automatic Trim Tab Control, Manual Trim Tab Control, and Trim Tab Position Indication all combined into an easy-use, space-saving keypad. AutoTrim Pro automatically levels the pitch and roll of your boat, adjusting your trim tabs to changes in vessel speed, sea conditions and shifting weight. You can take full manual control