The Louroe Electronics Verifact D-ML LE-778 D Mic Level Microphone is an omni-directional, low impedance, electret condenser microphone. It can pick up normal sounds up to a distance of approximately 15’ (4.5m) if wall mounted, or within a 30’ (9.1m) circle if ceiling mounted. This microphone is mounted to the back of a single gang stainless face plate. This microphone comes with a pre-made 20’ (6m) cable that features a stereo plug for directly connecting to the audio input of the IP camera. The microphone fits into a standard single gang electrical box (sold separately).