Banana plugs; Battery testers; Beeper carrying cases; Digital switching systems comprised of interconnected electromechanical and solid-state power management enclosures with standard and custom keypads for user remote control, the foregoing for use on marine helms and land-based vehicle dashboards; Electric cables, wires, conductors and connection fittings therefor; Electrical wires; Electronic components in the nature of connectors; Extension cables; Plug-in connectors; Plug adaptors; Plug ...