Lectrotab Trim Tab System With The Oval Control Switch - This microprocessor-based trim tab control and position indicator incorporates tab retraction and calibration of the indicators whenever the control power is switched on or off. This control is self-contained with no remote electronics enclosure. Mounts over a 21/16" dia. hole. Completely sealed and waterproof. Handles up to two actuators per tab. Designed primarily for exposed installations such as center console and fly bridge applications. Control switch is available in gray and black. 33/8"H x 4"W.