Hi to all, i'm studying Fibaro REST API  Please login or register to see this link. but i find only information about calls and fetch info. Seem only one-directional interface.   For example, the Motion Detection sensor. How i can obtain in realtime the event trigger? I need to fetch every seconds the device info to detect it?   In some other REST API of other kind of service, for example, it's possible to subscribe an event by providing a callback URL, and system will call it when an event occur.