3) CameraVIDEOLENSVIDEODCAC24V/DC12V.PDCLEVELRear view of CAMERAConnect cameras to the camera input on rear panel of DVR marked CAMERA IN.4) A di4) Audio- Audio Input1. 4ch Audio Input is available for MSD-1600, 2ch for MSD-800, 1ch for MSD-400.2. Connect Audio Input as needed for camera channels.3. Audio channel 1 is assigned for camera channel 1~4, audio channel 2 for camerachannel 5~8 audio channel 3 for camera channel 9~12 and audio channel 4 forchannel 5~8, audio channel 3 for camera channel 9~12 and audio channel 4 forcamera channel 13~16.4. Audio input should be connected according to assigned camera channels for audiorecording.- Microphone Input1. 1 Microphone Input is available. It does not record microphone input.2. Microphone is to support TWO-WAY Audio, for communication with remote user.- Audio Output1. 1ch Audio Output is available.2. Selected Audio channel at DVR will be output.13