Doorbell 1st gen replacement

i’ve had several first Gen doorbells. The last one isn’t holding a charge well even though it’s connected to a wired power supply it’s not working unless connected to a solar supply. Called Ring and got advice to purchase a video doorbell, pro. It says the doorbell must be connected to a much lower power supply than the standard 120v. It came with a little thing like a battery pack that supposedly gets hooked up to the indoor time. Does that step down power or is that just a Ring connection to the time?