After writing my previous post, it struck me that someone must already have come up with a remote control e-stim device. It’s an obvious idea and of course they do exist. For example, here’s one from the estim company (official site here). It’s a lot more expensive than your average dog shock collar, but it also has a lot more features and should avoid that whole pesky business of frying your nerve endings. With the addition of some suitable attachment straps, I don’t see any reason you couldn’t use it for the same kind of play.
Updated: There’s also this one from ErosTek. Similarly pricey, but looks like a great toy for remote controlled fun.

These two images from the Men are Slaves site shows a couple having fun with what looks like a remote estim.
This domme seems like the caring sort. Obviously she can’t have read the article in question. Captioning comes courtesy of the
I found this image 
Lady Valeska is a London based pro-domme. You can find her professional site
Assuming you have the necessary equipment, you can download the experience
I believe this is from the 
That’s
This artwork is by the artist Ikelag. Be cautious if you look up more of his work. I did a quick search before posting this and discovered that it’s mostly not femdom and often seems to depict people younger than I’d ever be comfortable featuring here. I found this via an old femdom tumblr and liked this particular piece too much not to use it.