The OCR8 Bluetooth Remote from Austrian Audio is for use with the free Polar Pilot app to remotely control your OC818 microphone directly from your smartphone or tablet. Once paired with your device, the Polar Pilot app gives you full wireless control over the OC818’s polar patterns, high-pass filters and pads. The app also features an overload monitor that displays a red bar when the signal is too loud. Engaging the 10dB pad will reduce bias voltage to the capsule and protect the mic from clipping.