Mobile security system housing

FIG. 1 is a front perspective view of a mobile security system housing showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines showing details in FIGS. 1-2 and 5 - 8 are included for the purpose of showing environmental portions of the mobile security system housing and form no part of the claimed design.