The SmartPlug only inserts one way, STRAIGHT IN, and the male and female are unidirectional in shape thus NO MISTAKES.


I have literally seen NEMA L5-30's forced in and inserted incorrectly. This can create a very dangerous situation. This physically can not happen with the SmartPlug.


The positive locking mechanism is also a lot more robust. Because it does not involve threads, twisting and the plug can't physically wiggle once inserted, the locking mechanism actually lasts for more than a few weeks before self destructing.


A feature I really do like is the LED indicator light found on the pre-made cord sets. The field install plugs DO NOT have the LED indicator. They tried but to make them waterproof was proving too expensive on a field install plug. Factory made cord sets have a blue LED in the boat end of the cord. Nice feature... Overload the main breaker and trip it? One look in the cockpit, or at the boat end of the cord, saves you a trip to the dock pedestal.