Re: Master-Slave Thermostat recommendations?

I did some more research and looked at earlier posts from you on the list
on the venstar unit.
I also found this:
http://pixiescorner.wordpress.com/2009/03/01/getting-setting-insteon-information-from-the-venstar-t1700-thermostat/
I think I understand the problem now where it won't let you query it
for whether it has told my AC or furnace to turn on, you can only query for
temp, which is pretty silly.

The problem with RCS TR40 is that it's not RS232 compatible, and you need yet
another $170-ish module just to gateway RS232 to RS485. Were you able to
plug your RCS RT16 in directly into your PC?

Also, the RCS has no built in support for master/slave configurations,
so it would rely on mh to do the job via serial port cabling (I need to
include the price of additional cabling in the house).
In other words, it looks like I would need 2 RCS thermostats plus wiring
plus RS232 to RS485 before I could make this work (around $600).


Otherwise, smarthome also told me to consider this:
http://www.smarthome.com/3038A/HVAC-2-Zone-Controller/p.aspx
plus a couple of these:
http://www.smarthome.com/30951/Thermostat-Display-TS40-001-01060/p.aspx
That's around $500 before anything to make it talk to my computer.

I'll see if I find anything else, and try to read up on the HAI solutions
(didn't find a lot of info yet).

Thanks,
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems & security ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ 

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