High pitched Sound

Hi,

Our Nanit has had a few instances where there is a high pitched alert picked up by the camera as "sound detected" at our daughters nursery. The few times it has occurred there has been no activity in or around her nursery for quite some time.

It's very random, happening once tonight and twice in mid June.

We noticed in June that the plug was kind of coming out of the wall for the camera. But nothing else as a possible answer. This was not the case for tonight.