It is a very good solid door station door bell but DAHUA has changed things after firmware version 4.5 and push notifications need station monitors to work. This is really an extremely bad policy and doesn't show good support at all. Prior to firmware 4.6 you could use push notifications without monitors and that is the way it should have been kept. DAHUA support is really zero for this even though this is a really extremely good and well build door station.
