white light and low pitched noise, Electric Doggy Door operated on it`s own.The wife and I were woke at 2:30 am by the sound of a low pitched hum and white light illuminating through all windows in my home. Also my Dog Entry door in my kitchen door opened and closed twice. By the time I got super quickly clothed and made it out the door, the light had vanished and all was quiet. Several neighbors came out in the street,hearing the same thing, but no one saw what it was. No way was this a plane, helicopter or any thing I`ve ever seen or heard of that flies that eists of this earth, and I`m big into aviation. Also, living near the airport, planes fly over my home all day long and my Doggy Door never has malfunctioned.