AXIS Digital Audio Extension Kit can be paired with AXIS T8355 Digital Microphone to allow you to transmit the digital audio signal using a network cable up to 100 m (109 yards). The cable can be safely placed near power cables and cables carrying high frequency signals. This makes the microphone perfect for surveillance situations where the network product is installed in a control room, away from the audio source, such as is often the case with casinos and airport security control.