I were surfing web in order to find answers and looks like still have to pick up on knowledge in order to efficiently search for what I trying to accomplish.
Task: Arduino (or similar) host that processes data have to communicate (at least receive) data with simple sensor Hall Effect Sensor. We've got 6 doors/windows so 6 sensors should be in place. I am looking for most efficient way to wirelessly send data out of sensors (using RF transmitters?) to Arduino board. Only thing, is that I don't want to have extra Arduino board per each sensor. What is the best way to get data out of sensors?
If there is any RF bounce technique, to sort of send signal and get response back? Or there is way to build simple filter of Hall sensor that will pop additional header (id, checksum) to packet and send through RF transmitter? Those sensors should be very low powered, potentially powered by simple battery or solar (with ability to store some power and with optional transmitting data about available power).
If there is ways to avoid using Arduino for this sensor + transmitter? As you understand is topic of home security. Am I going too far from the beginning? (I'm developer, but haven't tried physical yet). What would be action plan here? I am noob, and need at least some terms and directions (don't give me fish, give me rod ;) ).