Easy to set up. It was compatible with the other door chime kit we already had. Now we have two speakers so no matter where someone is in the building they can hear it. We were able to program the buttons so that when one is hit, there's a "Ding" and the other has a "Ding-Dong" so we know which entrance they're at.

The sound quality of the dings are a bit garbled but it works every time and was easy to set up and mount the buttons.