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Best pratice solution for designing a 50 nodes system cover 100 meter range.

Hello DevZone team, 

Currently, I want to design a wireless sensor system which can cover around 100 meter range.

It can be in any kind of topology: mesh, star, ... as long as it meets the requirements: retrieve data from 50 other sensor nodes with speed is around 1kByte per second.

As far as I know, nrf52840 long range still not available for mesh network design: https://devzone.nordicsemi.com/f/nordic-q-a/37952/mesh-networks-on-nrf52840-dongle and if we use normal connection, it can not meets the requirements: 50 nodes. 

Any suggestion on this?

Thank you very much.

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