A:AnswerYou are able to add Blink cameras to your existing Blink System at anytime, You can have up to 10 Blink devices per sync module as long as they are all within the 100ft operating range of the sync module in any direction. The cameras on the sync module can be in any combination.
A:AnswerIt does pretty well outside, the only down side is when condensation gets on the camera it still sees and takes video, it just isn’t clear, other than that they work great.
A:AnswerBlink does store the videos in the cloud but you can download the footage to the app on your phone and from there you can store it on any other device that you prefer
A:AnswerThe cameras should communicate with the sync, but you'll be stretching the range for viewing any detail depending on the number of cameras. You would want to contact Blink customer service.