How does power get to the camera? ..
Yep, and though Sir Havasu already astutely answered your question (it's called 'PoE' - Power over Ethernet..) I echo his post for a Reason.. (below..)
...The only concern is the camera is rated to -40. While ...that cold is rare) we have wind chills down to -60 ..
Couple ideas for ya: 1) IF you can have 'view-mastery' of all angles you wish to cover, from
Inside yer place (ie: thru a Window / Door window, in front) then you don't have worries of those Temp 'extremes', and if you mount the Cam very-close to the glass / touching it, if possible, then you shouldn't have issues from any 'back-reflection', etc..
..We do this with Our front door Cam, thru a small, but thick 'decorative leaded glass' window-panel, up top, and even with a Thick-glass like that, there's no significant 'image degradation' or back-reflection to cause worrisome 'loss' in image quality / detail.. (Though, we're not doing that for 'Temp concerns', more for protection against 'baseball bat and/or paint-ball degradation'..
If you Don't have an 'all-seeing-Window' op, there (where you Must 'put it Outside' to cover the angles you want) there's a couple good options for making a 'heated Doghouse' for the Cam.. a) There Are 'weatherproof housings' available for you to stick your Own Cam inside, and 'Heat' can be supplied two ways...
..One, some models are available
With an integrated heater (but those are going to cost more, obviously..) Or, you can simply 'DIY' with a product called 'Chromalox blanket', ie:
https://www.chromalox.com/en/catalo...se-heater?Watts=25&Volts=120&Width=1&Length=5 ..(URL 'reads odd', cuz I narrowed down the search params a bit for ya..
Here's more Info:
https://www.chromalox.com/-/media/files/catalog/resources/en-us/mod-sl-n.pdf ..Yes, you'd have to run a separate, low-power AC line to it, but.. Frankly, that's really easy with an extension cord / outdoor, waterproof J-box / some 'RTV'.. And, you simply 'gate' the Temp with a small AC thermostat.. OR -
2) If you Didn't want to deal with getting / rigging up en
Enclosure, etc, these 'blankets' Can be mounted
Directly To something, to help keep it warmed, ie: You simply 'RTV-silicone it' right to the housing of the Cam, with that AC-line / some waterproof-connections (simple..) and then, only turn that On, from the House (ie: Power strip / Thermostat, etc)
If / when it was going to be an 'Extreme cold-snap', etc..
..In fact, they Do make DC-powered ones, that I - believe - you should be able to even use 'PoE' for, since they only need about 12V DC, to work.. However, the DC blankets
are pretty 'low wattage' though (so, not sure if 'Enough warming capacity' for -40-60˚ temps mitigation, etc) but I believe it Could be
done with 'PoE'.. If not 'externally' to the housing, likely 'internally' (ie: a tiny one of the DC-blankets
Inside the Cam enclosure, if 'space' could be found...)
Anyway, I've used these with Great Success for similar projects (in a Housing, that was exposed to Outdoor temps, in Buffalo, NY, so.. Pretty dern Cold, sometimes..
PM if ya wish for any more details on the stuff..
.03
jd