2 Chime Pro at 1 Place.

I have a Chime Pro - old version. Now Iv'e added a new Chime Pro - latest model .Also added Doorbell Pro Cam. On iOS App installation , When needed to set up the new Doorbell Pro Cam , The2 Chime Pro's started to "reply" to the new Device. Didn't know what to do so Iv'e continue ...Now the Chime Pro - old version is making pulse loud sounds every few seconds.All my devices are OK except this issue.**How can I stop hear this Chime Pro - old version sounds ?**Thanks