Re: HA Primer - Pos and cons of X-10, Z-wave, Insteon, UPB

[nobody@xxxxxxxxxxxx (Dave Houston)]

ddl@danlan.*com (Dan Lanciani) wrote:

>In article <z1YWh.116736$DE1.58348@pd7urf2no>, shaw@xxxxxxx (echo) writes:
>
>| X-10s answer was the "2-way module".  They are not really 2-way
>| since they can't acknowledge a command directly but they can be polled.
>
>Actually, they can be configured to acknowledge a command (or any state
>change).  I've never needed this feature because (a) I don't have the
>reliability problems you are worried about and (b) my use for 2-way
>functionality is generally to see in what state some other person/process
>has left the device--something that is usually best done at the moment I
>want the information.  You might want to take a look at X10's extended
>command set; it is quite complete.

And, most of the Smarthome designed X10-compatible modules report changes
and respond to Status Request with the current preset dim level, even
transmitting an OFF should a bulb burn out.