Bring four-channel video capture into a compact main unit designed for distributed surveillance architectures. The AXIS F9104-B Mk II Main Unit is built for installations where the sensing element and the processing hardware need to be separated, giving integrators more freedom to place cameras in tight, discreet, or hard-to-reach locations. That separation is valuable in environments where appearance, protection, or mounting constraints matter. Retail counters, vehicle interiors, ATMs, and secure facilities often need video coverage without exposing bulky hardware. A main unit approach helps keep the visible footprint small while preserving a professional system layout. For security teams and integrators, the benefit is control. Four channels allow a single main unit to support multiple views, reducing hardware sprawl and simplifying system design. It is a practical choice when you need to scale coverage without filling the site with extra devices. Choose this model when the project calls for discreet installation, flexible placement, and a clean architecture around Axis Communications F-series video capture.