If you already have an old style ding dong doorbell, you just attach the wires from that doorbell to the ring. If you have the newer digital doorbell there are different instructions, but it does work. It can also be hooked up totally battery powered. I don't remember the battery life, but it is quite long.
We also have 4 other cameras at the house, we prefer the ones from Nest. If you want one to just check bumps in the night that would be better than ring.
2006 Sea Breeze LX 8341 on a Workhorse W22 Chassis with 22.5 Alcoa Alum wheels,
2011 Chevy Colorado 4X4 with Ready Brake