A:AnswerI bought two sets both of them had the sync module but no SD card.
I changed from Ring because no more annual fees. I like the system better than the Ring System.
A:Answersync mod is for adding additional cameras to run off one system-so i have five and all five screens can display at once. singular cameras just require permissions in your phone and the app.
A:AnswerIn my household we have three phones that the Blink app has been downloaded to and each person can check the live feeds and previous motions from their own phone. I am not sure the maximum number of phones but it works fine for us with three.
A:AnswerMembership required if you are looking to have video recoded and store for personal use. Will record daily activities but small clips and space limited. Their is a trial period to test services