VOX (Voice Operated Transmitter)?

Garmin fenix 7X und epix Gen 2 im Test

Der Schwerpunkt dieses Tests und Vergleichs der Garmin Fenix 7X Solar und Garmin Epix Gen 2 liegt auf den Sensoren wie Höhenmesser, Positionsbestimmung und Herzfrequenz. Was unterscheidet die beiden GPS-Outdoor-Smartwatches? Und wie gut ist die Taschenlampe der Fenix 7X für den Outdoorbereich? Hier geht es zum Test der Outdoor-Smartwatches ...

    Hallo,

    (Sorry about my English ;-))

    I have a mobile GPS system in my car (Garmin Quest 2) with its own speaker. However, the volume is a bit low so I am looking for a way to mute the volume of my car radio when the GPS lady starts speaking (the radio has a "mute" input at the back).
    I was told VOX units (Voice Operated Transmitter) exist that can do this.

    Does anybody know where I can order such a unit, either as a "Bausatz" (?) / kit or as a ready-to-use unit?

    Danke!

    Roland