> Still, at $300ish EACH, I'd think easier to build my own if I'm going to
> use 25+ of these!
>
Maybe a low cost solution could be one off the following:
The IPC chip at
http://www.beck-ipc.com/products.asp?status=0_EN_products

The TINI at
http://www.ibutton.com/TINI/index.html

Of course the products aren't ready yet and still in Beta I think.