The light socket increases the height of the bulb about 1-5/8", and the diameter is 2-3/8" (about the diameter of a bulb).
No.
The light socket becomes an accessory to the controlling cam V3 it powers. So it operates the same as a Spotlight accessory, from the V3 accessories menu. This is why it can’t be used with a V2 – a V2 can’t control external light accessories.
No problem. The socket is rated for damp locations from at least -4°F to 120°F. (I’d guess further)
It will not. All Wyze bulbs and now this socket are rated for 120V/60Hz.