You will want to double check what time it reboots and also make sure its on full time power source. Out side of that it can make noise going from b/w to color and the other way as well.We recently bought a Pro HD to use as camera for our nursery. I set up the app on my and my wife's phones and so far everything has worked perfectly. Today though she was putting our son down to sleep and heard the camera moving so she waved at it, assuming that I was watching from my phone at work. However, at the time she put him down I was not using the app. Is it possible that someone else has access to the camera? Or was the sound she heard possibly the camera autofocusing or switching between infrared and the regular camera since it was getting dark (if it even makes a sound while doing that? We are concerned about anyone else accessing the camera and want to make sure this is not a possibility. I assumed someone would need the serial number of the camera and the password we set up when we installed the camera but now I'm not sure. I plan on changing the password when I get home but want to make sure there aren't any other settings I should check.
The would need the SN and password. So don't know how unless it was used and you have a different user still on camera if was used make sure to factory reset camera set up again