Ring shodul add 2 more little black crews for attaching the Ring to the mounting plate. I dropped one and was in a panic since there wer no spares. did not know the thread size to even find a replacement. To call Ring and wait for a replacement meant having it dangling on 1 screw. Not desirable.
Luckily I had a contractor grade magnet and used it to find it.
Ring, can you consider throwing 2 spare mounting screws into the mounting kit in the future? Very cheap insurance to assure customer satisfaction.
Outside of that I love my Ring!