Simplest way to use 3 nRF52840 dongles for home automation

[Nimish]

Hello,

I want to implement home automation project using 3 nRF52840 dongles. i.e I want to connect all the 3 dongles with each other and the signal sent from one device(connected to a dongle) should be received by other devices connected to other dongles 

[Bjørn Kvaale]

I will continue answering in your other case here.