First of all hello...
What I intend to do is to connect via RF two devices with bidirectional communication, with a cheap low power devices.
The requisites are:
Low power
A range capable of covering a full house (3 bedrooms, living room dinner room, kitchen).
Security, if possible it should be secure enough so that two neighbors do not interfere with each other.
If possible I would like to have the rf communication and the CPU on the same chip but this is not a must have feature. (a paring feature like the zigbee would be great)
Also if possible if they have a development module it would be better.
Can anyone give me some ideas and components that could do this?
In time I used Xbee zigbee modules but they are expensive.
I already searched a bit and found the CC1110 from texas instruments
https://www.ti.com/tool/cc1110dk-mini-868
Does any one know something similar?