I'll look into these. But I was thinking maybe I should get the motion sensor reading value as well instead of just info that it detected something. In the woods for an example, sometime trees just move a little bit because of wind or smth. I need to set a threshold so I wouldn't get an alarm every time a leave drops.
Do the above mentioned modules work in a network as well? When they're all on the same frequency. How can I conf them to send the node ID. Do I need some sort of chip there? Or would it be enough to just send a packet when sensor outputs a reading?