A method of mounting a security apparatus , the method comprising: obtaining a security apparatus body comprising a socket and with a functionality plane, wherein the socket is recessed into a back side of the security apparatus body at a first angle from the functionality plane of the security apparatus body; obtaining a mount comprising a base and a stem, the base adapted to be affixed to a vertical wall in either a first orientation or a second orientation, a proximal end of the stem attached to the base, and a distal end of the stem formed to fit into the socket, wherein the stem extends from the base at a second angle from horizontal; selecting an orientation for the mount from the first orientation or the second orientation to use to affix the mount to the vertical wall based on a mounting height, a target coverage area, and the functionality plane of the security apparatus body; affixing the mount on the vertical wall in the selected orientation at the mounting height; inserting the stem into the socket with the security apparatus body in an upright position to situate the security apparatus body on the mount at an elevation angle of the functionality plane of the security apparatus that is fixed by the selected orientation, the first angle, and the second angle; wherein the functionality plane of the security apparatus body is set at an angle from horizontal equal to the first angle plus the second angle if the mount is affixed to the vertical wall in the first orientation; and the functionality plane of the security apparatus body is set at an angle from horizontal equal to the first angle minus the second angle if the mount is affixed to the vertical wall in the second orientation. obtaining a security apparatus body comprising a socket and with a functionality plane, wherein the socket is recessed into a back side of the security apparatus body at a first angle from the functionality plane of the security apparatus body; obtaining a mount comprising a base and a stem, the base adapted to be affixed to a vertical wall in either a first orientation or a second orientation, a proximal end of the stem attached to the base, and a distal end of the stem formed to fit into the socket, wherein the stem extends from the base at a second angle from horizontal; selecting an orientation for the mount from the first orientation or the second orientation to use to affix the mount to the vertical wall based on a mounting height, a target coverage area, and the functionality plane of the security apparatus body; affixing the mount on the vertical wall in the selected orientation at the mounting height; inserting the stem into the socket with the security apparatus body in an upright position to situate the security apparatus body on the mount at an elevation angle of the functionality plane of the security apparatus that is fixed by the selected orientation, the first angle, and the second angle; wherein the functionality plane of the security apparatus body is set at an angle from horizontal equal to the first angle plus the second angle if the mount is affixed to the vertical wall in the first orientation; and the functionality plane of the security apparatus body is set at an angle from horizontal equal to the first angle minus the second angle if the mount is affixed to the vertical wall in the second orientation. <EOS>