I have had cameras for several years. I had no trouble with motion sensing and notification until I added a V3. I now have V1,V2, V3 and a Pancam. Now I cannot reliably get motion detection especially on the PanCam and on of the V2s. The settings are no longer uniform among the various camera-a major confusing flaw I think. And there are no reliable directions for each type of camera, what buttons should be on, off, green or white and how it interacts with schedules. The hardware seems great but the interaction between them and instructions for use need a rework. In the meantime I guess I just have to get a tech on the phone and go thru each camera.