The CAM-1101 uses a colour day-night camera with digital noise reduction. It features H.264 compression, dual opto-isolated inputs, 1x relay output, Stereo channels audio (synchronised or independent of the video stream) and Power over Ethernet to power the unit. It has a 2.8-12mm or 6-50mm V/F auto DC iris lens, housed in a 100mm Vandal Proof Dome. Customisation by camera The compression ratio and resolution can be scaled independently, thereby optimising the image quality under all conditions, and making best use of the network bandwidth.Day and Night: This camera automatically selects the mode that is appropriate for daytime or night-time conditions. In daytime conditions, the COLOUR mode provides optimum colours, and in night-time conditions the BW mode enhances the definition of the image.