the embodiment shown the tops 75 77 of the sidewalls 70 72 are closely adjacent to the keypad 60 and are sufficiently close to obstruct at least partially the view of the keypad 60 by an observer the sidewalls 70 72 may taper longitudinally as shown but need not do so and must remain a height that continues to obstruct at least partially the view of the keypad 60 by an observer fig6 is a perspective view of the outer escutcheon 62 as viewed by a typical observer this figure shows that as the outer escutcheon 62 is viewed from this angle the line of sight to the keypad 60 is obstructed the keypad 60 becomes less visible as the observer moves closer to the door 26 also from the vantage point shown in fig6 the line of sight to the joint between the upper cover 56 and lower cover 32 is obstructed even where the joint may be in view the joint can appear to be a bend in the escutcheon 62 rather than a joint between two parts the inside escutcheon 80 comprising an upper cover 52 that covers the battery holder 50 and the lower cover 32 a is shown in fig7 the bottom edge 81 of the upper cover 52 is concave and mates with the upper edge 82 of the lower cover 32 a which is convex conversely the bottom edge of the upper cover 52 could be convex and.