Good questions, @Tmaz! The recommended operating temperature for the Video Doorbell Pro 2 is
-5°F to 120°F (-20°C to 50°C). As @bemak187 mentioned above, it is powered by voltage through wiring. Check out our Community post for installation guides. In regards to the Ring Chime and Chime Pro devices, these do indeed work with all of our Video Doorbell models. 