At this time, there is no integrated camera, microphone, or speaker on the AirCheck G3.
While the AirCheck G3 does not have a speaker on the unit, it does support Bluetooth speakers. The Android audio settings are for a Bluetooth headset or speakers.
Wi-Fi Beeper:
Additionally, the only native sound the AirCheck G3 has is a beeper for locating Wi-Fi devices. For more information click here.
