Report "This problem is for someone that is familiar with Leviton electronic houshold light switches. I have a switch (3 way) in our hall that goes off and on by itself. The number is a 6607. Both switches are capable of dimming as you probably already know. I suspect outside interference as there are no other devices in our house like this. About 2 months ago we bought new switches and had an electrician install them and they worked fine until now and the same problem came back. These are much to expensive to just kiss off as a bad product and I am hoping you can suggest a filter or other cure. One thought is to change the circuit it is now on to the other phase in the house to try to isolate the interference if that is what is causing my problem. I need to ask a "PRO". Thanks, Ed Roberts"