Xlr8, I bought that EV Components RFMC very shortly after buying the car. I got the car Oct 1 2009, so sometime fairly soon after that. EV Components was based in Kent WA at the time, but is long since defunct. I think I only used the 120V pigtail once (see below). I used the 10-30 a couple of times at a cousin's house, but mostly used the 14-50 pigtail.
The original yellow NEMA 14-50 pigtail melted on a road trip to San Diego in April 2010, as did a replacement a couple of months later. But EV Components gave me free replacements, and the third one worked great with daily use until I sold it in September 2016.
(The RMC that gregd shows was available during my April 2010 road trip, and since my RFMC pigtail had melted I stopped at a store in San Francisco and bought one. The very helpful employee that sold it to me said he'd tested it. But at midnight, in below-freezing weather, up at a KOA in the mountains a long ways from civilization, at the lowest level of charge I have ever been at - it failed to work. At least I had the melted RFMC pigtail to console myself with. The 120V pigtail worked though, and in the morning I got tools from the KOA owner and managed to patch the melted pigtail up enough that I could use it for the rest of the trip. That was exciting).
I never had an MC240. One of the intervening owners must have bought that.