FIG. 1 is a perspective view of a CO alarm with an icon image;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view of a second embodiment thereof;
FIG. 9 is a front elevation view of a second embodiment thereof;
FIG. 10 is a left side elevation view of a second embodiment thereof;
FIG. 11 is a right side elevation view of a second embodiment thereof;
FIG. 12 is a rear elevation view of a second embodiment thereof;
FIG. 13 is a top view of a second embodiment thereof; and,
FIG. 14 is a bottom view of a second embodiment thereof.
The broken lines defining the body of the device depicts environmental subject matter that forms no part of the claimed design. The numeral depicted in FIGS. 1 and 2 forms part of the design of the embodiment depicted therein. The numerals depicted in FIGS. 8 and 9 represent placeholders for numerals that may be displayed there, but the numerals themselves do not form part of the design of the embodiment depicted therein.