A:AnswerThis is NOT compatible with the Arlo Pro 4 camera. The nut provided on the back of the Arlo Pro 4 camera is too large to accommodate the bolt connector on this mount.
A:AnswerI have the Arlo Pro. It does have an alarm on it but you have to trigger it. It's actually convenient as it is at the top of your app easily to get to. It also has 2-way communication. You cannot set it up to trigger the alarm with motion or noise. It has to be manually activated.