When practicing FPV (First-Person View), you go fast, you go far, and sometimes you crash. That's why we attach a buzzer to the drone, which helps us find it if it has landed in tall grass or a cornfield. This buzzer saves you hours of searching. But sometimes, the battery gets ejected. The drone loses power, so there's no buzzer. That's where the standalone buzzer comes in, with its own battery (like the Vifly Finder). This video demonstrates the security provided by such a buzzer.
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