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Lorawan is a low powered wide area network. The plus side is that it is extremely long range with a very low power requirement (we're talking kilometers for miliamps), the downside being that it has very low data throughput so you can only really use it for exchange of text values rather than data.
A Lorawan gateway, provides the interface between your WAN and the internet.
https://en.wikipedia.org/wiki/LoRa
I'm using it to literally network a glacier with peer to peer environmental sensors.
Anybody want a basic Lora Gateway? Bit niche, I know. Finished testing my Lora Network and will be using a larger gateway for deployment.
https://www.dragino.com/products/lora-lorawan-gateway/item/143-lg01n.html