AXIS T8351 Mk II Microphone 3.5 mm is a high-performance discreet microphone specially designed for best results in rooms with low ambient noise-levels. This hemispherical microphone collects sound from every direction and the quality of the recording is superior to that of the network products internal microphone. AXIS T8351 Mk II is compatible with any network products that supports a 3.5 mm microphone input jack or a 4-pin audio connector. The microphone is powered by the network product and does not require an external supply. This microphone is ideal for locations where superior audio is required.