Installing the Nelly Security WiFi Video Doorbell

Ever since Ring released their video doorbell a few years ago, I've been waiting for a WiFi video doorbell that didn't rely on the cloud (and a monthly fee), was powered by hard wire, and still looked decent. I've only had it for a few days, but I think that the Nelly Security doorbell accomplishes this. Unfortunately, it looks like the Nelly version is out of stock at the time of writing, but this doorbell has been rebranded by a bunch of other companies, one of which is Nelly.