update I replaced the transformer and 1 single doorbell with the ring video doorbell wired. Everything is functioning as it should. The existing chime from the standard doorbell is slightly louder with the extra voltage supplied.
I have two doorbells, both hooked to the same transformer. I'm looking to replace one of the standard doorbells with a Ring doorbell. The existing transformer says 115 V input to 10 V output. The new one supplied by Ring says 120 V input to 16 V output. Will this work?
There are only two wires connected to the existing one (it's not grounded). It then splices off to both existing doorbells. Will I be OK doing this? Will the existing old doorbell still work after I replace the Ring doorbell with one of the existing?