When you need maximum adjustability for your wall mounted lights, the Sentry-WM is your light. Just like its family members that feature a multi-axis - pivoting knuckle allows for 540° about the horizontal and vertical axis. A single tightening bolt (thumb screw) secures movement of the light fixture in both planes. The difference is the included Wall Mount (M1-WM) that allows for single and dual fixture mounting applications (i.e. cosmo-sconce or sentinel-WM).