VOXes are audio surveillance bugs for spying purposes.
A VOX is a listening device that transmits only when someone speaks within its proximity. When no one speaks, when no one is at home or during sleeping time, they change their status to standby, so the battery lasts a longer time.
All the VOXes and audio bugs in this category are several times more powerful compared to the simpler ones. All of them are using a computed element and programmed in our lab to almost endless frequencies

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