@Magic-W it is the Arduino project that has the attribute, making it possible for other projects (such as MySensors) or a sketch developer to override.

@Magic-W the light sensor sleeps most of the time, so it is not likely to see incoming messages. Try replacing sleep() with wait().

@TheoL @Yveaux Yeah，Thank you for your advice. when i try move the radio closer,it's OK!

@Magic-W there can be only one gateway per network. You can create 2 separate networks with 2 gateways (put each on a different channel to prevent interference). Why do you need 2 gateways?

@Magic-W the intention is that you send a Request from your node when you want to Receive a status update from the controller. The controller sends you a response with the requested status. You keep the node awake Wait until you receive the message from the controller. In fact you are polling for new messages every x time or whenever you need an update.