Who owns the spectrum?
In Europe it is using the 868 MHz ISM band with some duty cycle rules (maximu of 10% of every hour can be used for broadcasting).
In the US apparently 433 MHz is used instead.
alt Hacker News
In Europe it is using the 868 MHz ISM band with some duty cycle rules (maximu of 10% of every hour can be used for broadcasting).
In the US apparently 433 MHz is used instead.