False Sound Notification of a single bang / knock



Hello, I have 3 of your cameras. A recommended your cameras to a friend and he has 1 or 2 now. We both get sound notifications of a “Bang” on our cameras every few days… what is that? Is that the camera re booting after a software upgrade? I can send you privately the notification video/sound. Today I had this sound notification on 2 separate cameras. One in my pole ban at 3:30am and then in my dinning room about 10am today.