This app is extremely slow in communication with the router and nodes. It takes forever to connect if it even connects them. More often than not, I have to try 3 times before a child node will reconnect. The system doesn't seem stay connected very well with the modem either and I am always having to reconnect so when the app is slower than turtles stampeding through peanut butter, I get extremely irate at the your whole system and set up. Ten minutes to connect one node.