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On Sunday, August 11, 2013 12:46:02 PM UTC-4, Uri wrote:
The driveway lights started to turn ON during the day with no activity

that could trigger a 'faulty sensor' . Can it be low battery problem?



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Battery in what? The motion detector? Seems unlikely, but with
X10 anything is possible. Does the controller for the driveway
lights respond reliably to commands from other sources, eg manual
X10 controller? Since the battery is easy to replace, it seems
it would be a good place to start, just to rule it out.....

OR - a neighbor with X-10 controlling something else using the same codes or
the "ALL ON" command.