Selling a never-used, open box Google Nest Doorbell (2nd generation). This is the wired version. It comes with everything you need to get started! Note you require 16-24VAC doorbell wiring in order for this doorbell to work. Homes with older doorbell wiring may require a transformer. I will not help you install this! When you buy it, you are on your own -- but everything you need is in the box.