Re: Porch light by remote question.

["Robert L. Bass" <robertlbass@xxxxxxxxxxx>]

> It's possible to do this using X-10 but
> without the need for an X-10 wall
> switch....

This can be done very simply using an ELK Magic Module.  Program the
HomeLink to send any unneeded X10-ON command.  Program the MM440 so that
each time it receives that X10 signal it checks a flag.  If the flag is set,
unset it and send an X10-OFF command to the porch light's X10 module.  If
the flag is unset, set it and send an X10-ON command to the module.

Also, if the X10-ON command for the module is received (i.e., something else
turned it on), set the flag and do no more.  If an X10-OFF command for the
module is received, unset the flag and do no more.

This will allow the MM440 to track the porch light status accurately with
only one exception.  If the light is turned on or off manually the MM440
won't know it.  In that event the next time someone presses the HomeLink
button it will *appear* not to work.  They can then push the button again
and the lamp will change states and the system will be in synch.

I'm sure the same can be accomplished using the Applied Digital module.  I
sell ELK Products online so I'm inclined to mention them first.  Here's a
link (my website) to the MM440 in case anyone's interested:
http://www.bassburglaralarms.com/product_1485_detailed.htm

--

Regards,
Robert L Bass

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