Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!cmcl2!rna!dan
From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: comp.periphs
Subject: Re: Computerized Climate Control
Keywords: thermostats, heating, cooling
Message-ID: <530@rna.UUCP>
Date: 23 Apr 89 02:19:22 GMT
References: <274@mplex.UUCP>
Reply-To: dan@rna.UUCP (The Dan of all vices)
Distribution: na
Organization: Rockefeller University Neurobiology
Lines: 20

In article <274@mplex.UUCP> fff@mplex.UUCP (Fred Fierling) writes:
>I am looking for a system that would allow a Unix machine to control
>the air conditioning and heating systems in a building.  What would be
>ideal is a system with software, temperature sensors and relays which
>would allow the Unix machine to function as a smart thermostat.  Indoor
>temperatures could be programmed to go up in the early morning and drop
>down after business hours, on weekends and on holidays to save energy.
>
>Ideally the system would run off a serial port and not take up a bus slot.
>

	If you just want an alarm/phone call system, Radio Shack, among
others sells one, cheap $70?
	If you want alarms/phone call and power shutdown, there are these
SAM units advertised in the back of Digital Review and Hardcopy mags. They
are more expensive: $1000? The SAM might have an aux relay output to
implement a thermostat system.
	If you really want thermostat control, I'm not sure. But the X10
BSR home control system (DAK had some) might do it. It has relays and
power switches.