AP-2 is a 2-Zone audio monitoring base station. It contains two audio inputs (terminal blocks) for connecting up to two Louroe Line Level microphones for live monitoring. It has two audio outputs (RCA type) for connection to an NVR with multiple audio inputs. The AP-2 also contains a selectable audio output (RCA) for connection to a Computer, VCR, or NVR with only one line-level audio input. A single audio input is available for audio playback from a Computer, NVR, or VCR. A built-in speaker provides live audio and playback audio. For the rackmount model look at the model AP-2-RM.