I am testing two zigbee modules to learn how work zigbee protocol.
I've started with a simple example. I've got connected a coordinator and a router in AT mode and works fine. I can send text from one another...
I've got both modules in the same room but when I've got one module and leave the room the connection is lost.
I had read in document: http://ftp1.digi.com/support/documentation/90000976_G.pdf
Indoor/Urban Range up to 133 ft. (40 m)
The code of my xbee modules is: XB24-Z7PIT-004 revC
Thank you so much, best regards.