I am experiencing unscheduled on/off events. Specifically, lights suddenly flash on-off-on-off, etc. No specific time is connected with this. During this time, wall plugged-in control consoles, such as SC503, etc, sometimes can and some times cannot gain control of the lights or appliance/universal modules. Last time this happened, I managed to unplug the CM11A, but this did not stop the flashing. I also have two Hawkeye II monitors, but these only feed two of the lights, not the ten different light codes that flashed. I use transceiver 751. I have a couple of "switchless" wireless wall switch substitutes. The best I could do to troubleshoot these (flashing had stopped). was to pull all the batteries, reprogram test one by one, and make sure all had new batteries. The last time this happened, I managed to pull out of the wall the transceiver and the CM11A. I /think/ the flashing stopped,, but, for a while, the SC503 could not control any module, light or appliance.
In some of these experiences, it goes on for multiple flashes in multiple sequences/series. In other times, it is a smaller "attack," lasting ten-15 seconds. I live in a free standing house. It has happened in the middle of the night, afternoons, evenings. I cannot say whether my attempts to punch the SC503 control buttons has generated a response from "elswhere," or not: Light goes on. I turn it off from the sc503...light goes on again (slow flashing). I hit all off, lights go on, etc.) My housecode is set to "M" far off the beaten track. I am sure there are more details in the experience/troubleshooting, but this should be enough to start. I have no idea whether my neighbors use house controls, but I doubt it. I am more adamant that haunting is not an answer.