Interesting; neon bulbs have the advantage of working on (US) line voltage without anything else needed, sticking an LED in there requires more stuff. Both cou

Interesting; neon bulbs have the advantage of working on (US) line voltage without anything else needed, sticking an LED in there requires more stuff. Both could have been squashed in the US market due to Federal energy regulations. Or that clear section could be for the GFI version of the outlet, the few years old one in my bathroom has a tiny clear window for a green light when it's not tripped.