Well, it looks like I got a set that works pretty darn well. I was a bit concerned that I might have to send the unit(s) back a couple of times before I got one that actually worked. Well, the planets aligned and mine seems to work like a champ, but only time will tell. I'll report back if they give the unit gives me any trouble. I will be adding another receiver here this week. Overall impression: Seems to be more than I expected for $30. Quite honestly, I was surprised (positive) by the general quality of the units and the packaging. I wouldn't say it is "high" quality, but it's above average especially given the price. It came with everything you would need to set it up and get it going. I did order it with batteries which does cost a little extra. I'm quite please with the purchase so far.