So i am getting this wireless broadband collection
https://bsnlteleservices.com/broadband/bsnl-wifi-broadband-plans-4756
And it something like this in this video but smaller
https://youtu.be/VxoTwcyFIx4
So in this what they does is put a small box like thing on your roof (which is pointed toward their mobile or some othe tower) they connect that device on your roof to your router with a wire (no modem is required) and threw this you get your broadband. Speed is upto 100mbps and its far cheaper then fiber. Will this device on roof emite some kind of harmfull waves or is it safe.
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