This is a continuation of this thread Best framework for long range setup , but I have made it a new topic as the selection of stock qualifies for a new discussion.
I have been looking at zigbee sticks - the Zigbee2MQTT page lists some compatible sticks, that also seem to compatible with most of the other software solutions (deconz, ZHA) : https://www.zigbee2mqtt.io/information/supported_adapters.html
For my setup I am looking for a stick that will be connected to a rpi 4. I am looking for the most powerful stick in terms of range, both transmitting-wise, but also receiving-wise. Most of my devices will be battery powered sensors that will be places approx 30 - 40m away from the zigbee hub. I know that I will probably need some mains powered devices to act as repeaters, but if that can be avoided, it would be good.
From what I can tell, range-wise the CC2538 + CC2592 - Zigbee dongle , the zzh! CC2652R Multiprotocol RF Stick and the CC2652RB development stick might all be good choices for a long-range setup. The latter two seems to be multi-protocol and not just zigbee. But I am a bit unsure if the CC2592 amplifier would be the most powerful option - or if one of the other sticks would be better?
Do you have any insight into what would be the most powerful option both transmitting and receiving wise?
Also I am a bit confused about flashing - I would prefer a stick that does not need additional hardware to flash, as I guess you will eventually need to flash the hardware to provide support for new devices or updates to the zigbee protocol?
Does anybody have some insight into this?