I called the manufacturer with questions, specifically if the RCATS lights every sort of plug equally. His answer was that it senses resistance and compensates, which didn't really leave me all warm and fuzzy. I told him I already had stuff that works on everything from Fox plugs to Cox glow heads, but that they take different dial settings to glow sufficiently, and I was hesitant to plop down big bucks on a device that may or may not be better. To my surprise he offered to mail me an RCATS so I could give it a try. I took him up on the offer.
I found the 90 second auto shut-off to be annoying. Nothing like flipping a balky engine over and over before you realize the thing shut off a minute ago. I guess that can be programmed to a longer delay if you ask him to do so. He also offered the possibility of installing a dial to adjust current, but I already have that on my power panel. If I didn't already have nicad drivers and power panels I probably would go with a custom tweaked RCATS, as it's a quality device in a handy, lightweight package.
If I didn't occasionally dabble in Cox .049 powered bouncers, the RCATS would be just the ticket. But I found the RCATS didn't light a Cox glow head very brightly, so I mailed it back with my thanks.