alt Hacker NewsIn 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.
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.
These bands are trivial to jam should any adversary want.