VIVOTEK
You may also use the diagonal holes on the mounting plate, marked as A, B, or C, to install the camera to a U.S. standard 4 in. junction box.
14 - User's Manual
You may also use the diagonal holes on the mounting plate, marked as A, B, or C, to install the camera to a U.S. standard 4 in. junction box.
14 - User's Manual
