Definitely recommend them, here’s a link.
They take 4 or 8 C batteries (can’t remember which) and they last for ~8months. They’re easy to clean too. I’ve had these for years with no issues.
Do note that a persistent pet can force their way in while the other one is eating - this can be fixed with a secondary enclosure. Also I do recommend getting the stainless steel dishes over the plastic ones. Plastic dishes can cause cat acne apparently.
It’s definitely nice knowing exactly how much each pet had eaten. Much easier to keep an eye on their health that way. Plus its less stressful for them since they’re guaranteed their own food - less competition.