Capture detailed 5 MP analog surveillance video in a dome-camera format for fixed-area security coverage. UNITED DIGITAL UAC-D125-AF40M combines its 5 MP imaging specification with IR illumination, supporting monitoring where visible light is limited. Its analog camera design makes it relevant for surveillance environments built around analog video infrastructure rather than network-camera connections. The 4.0 mm lens establishes the camera's fixed optical configuration. This focal length is a central selection point when matching a camera to the intended scene, such as an entrance, hallway, room, or other defined observation area. Select the lens position and mounting location around the required subject coverage before installation, since the listed lens specification is 4.0 mm. The dome form factor differentiates this camera from bullet-style and other exposed camera housings. It provides a compact enclosure choice for surveillance locations needing a ceiling- or surface-oriented camera profile. For analog camera replacements or coverage extensions, match the required 5 MP resolution, IR capability, dome housing style, and 4.0 mm lens configuration to the existing video equipment and the monitored area.