Using Sensors only

Hello guys

I have a project which is a house 1 floor with 800 sqaure meter area

I want to install about 30 sensors only in this project (most of them are battery operated)
the sensors are D/W fibaro sensor
4 in 1 aeon labs sensors
Smoke detectors everspring

I have done some reading and i found sth called Zensor beaming

I haven’t 100% understood how this should be done

Will any1 guide me?