[PaperBagger'14]

Originally Posted by Calgary14

My transformer is this one: https://www.broan-nutone.com/en-ca/accessory/c905

If the doorbell rings inside now and outside, but I don't want it to ring outside (only inside), will a new transformer solve this?

That transformer can only give you 16V, once you factor in volt drop over distance plus other voltage loss factors, that won't work for you. Get the transformer croflames posted and connect the wires to the indicated 24V terminals.