Re: Z-Wave Pool Thermostat with Water Temperature Sensor

["Robert L Bass" <RobertLBass@xxxxxxxxxxx>]

"Richard Kaplan" <rkaplan@xxxxxxxxxx> wrote in message
news:46fad916$0$26387$88260bb3@xxxxxxxxxxxxxxxxxxxx
> On 2007-09-26 07:23:02 -0400, "Robert L Bass"
> <RobertLBass@xxxxxxxxxxx> said:
>
>
>> The issue here is that Z-wave doesn't travel great distances.  If
>> the distance from the thermostat (or any other device) to the
>> controller exceeds ~30 feet, it won't work.  Thus, if you were
>> already planning to automate lighting, etc., Z-Wave might have
>> been your best choice. Since lighting control is not important to
>> you, Z-Wave is not the best protocol.
>
> All I need to do is plug in a few lighting control devices and the
> distance issue is resolved, right?  No problem at all.
>
>> Yes, precisely.  Bear in mind that ELK is synonymous with Z-Wave.
>> The system can work with Z-Wave, USB, X10, etc.  Their M1XSP (up
>> to eight RS232 units) can also be used to communicate with a
>> number of proprietary lighting and HVAC devices.  For your
>> swimming pool application, the optimum choice will be a
>> stand-alone, programmable controller with the ELK piggy-backed to
>> monitor and operate it. That's actually not difficult to do.
>
> OK I must be missing something really basic - why bother with the
> hardware controller like the M1G at all?  What not stick with just
> a computer and a bunch of devices?

You can do it either way.  The hardware controller will usually be
more reliable though and it costs less than a dedicated PC.  It's
also more powerful in most cases.

--

Regards,
Robert L Bass

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