If you have other hardware such as cameras at your location, the IP addresses must be set up properly on your cameras! Otherwise, the cameras will eventually interfere with your keypads. This is because your keypads have DYNAMIC IP addresses and most cameras have STATIC IP addresses. STATIC IP addresses will take precedent over DYNAMIC IP addresses and can potentially kick your pads offline with power or internet outages. The way to keep this from happening is to use a "Two Router Configuration." This is not required but will resolve potential issues if your network system is not setup properly.