Installing a second doorbell

I have a doorbell installed already and I want to install one at the back door of my house since it is already wired with an existing functioning doorbell, do I need to use a jumper that goes from back to trans on the chime?

Hi @floresroach. Which model of Doorbell are you looking to install on the back door? We have a few different wiring diagrams available in our Help Center which you can find here, but the installation will depend on which model of Doorbell you’re installing. It also depends if the doorbell wiring from the front and back door both lead to the same transformer, as the transformer needs to provide the appropriate voltage for both Doorbells.