I’m looking to do the same thing, did you or your electrician find a solution. I was thinking of using a transformer down downlights as I’m going to take my power supply from loft.
I would of used a ring adapter for ease but 1 they are not in stock and 2 they are not needed. I think that’s why ring don’t give to much information over about hardwiring.
Hi neighbors! The information we have on how to hardwire your Ring Outdoor Siren can be found in our Help Center Article here. The Outdoor Siren’s hardwire terminal block supports 9–28V, 12W DC power input and 22–16AWG gauge wire.
Do not apply DC power above or below 9–28V, 12W
Do not apply AC power
Do not use wire gauge above or below 22–16AWG
Consulting a qualified electrician and ensuring that these hardware requirements are met should do the trick for you. I hope this information helps.