SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

I have a KRain controller, I think it's RPS 496 (something like that), and I'd like to use a rain sensor with it. It has the ability to utilize one but Krain, to the best of my knowledge, doesn't sell their own rain sensor and there's no mention of compatibility with other brands in any literature I've seen. Does anyone know of one that would work? I'm a big believer in hard wiring things but I'm at the point where I'd seriously consider a wireless model rather than start messing around with my already installed conduit. But wired is fine if it's a good but cheaper.