Take the guesswork out of trim tab operation with the Lectrotab ALC-1 Automatic Leveling Control. Designed for planing and semi-displacement boats over 20 feet, the ALC-1 continuously monitors vessel attitude and automatically adjusts your trim tabs to keep your boat level, comfortable, and performing at its best. Its built-in GPS and intelligent microprocessor technology automatically correct roll and pitch caused by changing sea conditions, wind, passenger movement, and acceleration—so you can focus on enjoying the ride. Applications Designed for planing and semi displacement hulls larger than 20ft Direct replacement on Bennett or Lenco systems Automatically adjusts existing trim tabs to maintain a level boat Features and Benefits Controls roll and pitch automatically Automatically adapts to varying sea conditions Internal GPS - no GPS antenna or network required Prevents automatic corrections while turning Automatically dims LED tab position indicators in darkness and brightens in sunlight Reducing speeds below planing speed the ALC will not attempt to control attitude The ALC automatically starts correcting attitude during acceleration The ALC incorporates an “Adaptive system” to maintain optimum running attitude in varying sea conditions Press AUTO to enter automatic leveling Press AUTO mode again to enter manual mode so tabs may be adjusted manually Specifications Microprocessor based automatic leveling trim tab control with LED tab position indicators Actuators connect directly to ALC-1 display panel (no external power module box required Operates on 10 to 30 Volts DC CE Approved Completely sealed and waterproof (IP68) UV protected - will not deteriorate in sunlight Dimensions 3.15" W x 3" H x 3" D Contents Automatic Leveling Control Display Integrated GPS Receiver Wiring Connectors Mounting Hardware Installation & Operation Manual Calibration Instructions