Making a 1940's telephone bell work using WiFi and a Ring doorbell

Small project where I try and get a 'bought on a whim' antique telephone repeater bell to work with a Sonoff SV WiFi module so that it can be used as a doorbell in my garage to tell me when someone is at my front door, because I often leave my phone on silent and miss it! It was a bit more complicated that I first thought.
Parts:
GPO Bell 1a
BT Ringing Generator 2A
Sonoff SV module modified to separate contacts from the input voltage.