Yes I'm sorry, LHI878, I must've typo'd at some point and I've just been referencing it since. Any info on how to use this thing would be great but I'm about 90% sure it depends on additional hardware.
As for my range, like I said, I'm looking for movement in a room so 15 feet at least would be nice but I suppose as little as 10 could do. On the low end, as long as it could respond to movement two or three feet away that would do, closer than that wouldn't really be necessary. And for the angle, as much as possible would be preferred but as little as 45 degrees would be acceptable.
I don't need anything fancy. I don't even need to be constantly monitoring movement. I just need to wake up my clock with motion detection and have it turn off 10 or 20 minutes later unless it detects more movement and continues to wait for that amount of time after the last motion is detected.
I was looking at this:http://www.newark.com/jsp/search/productdetail.jsp?sku=14T0562
However I am worried about the response time being 30s. If that means that I can only take a reading every 30 seconds that's fine. But if it means it takes 30s to report movement, that's no good for me. I'm hoping for the clock to wake up relatively quickly after it senses motion, like a few seconds at most. Also I wanted to be sure it has everything included to be usable with the arduino unlike as I suspect the LHI 878 does not.