Carbon Monoxide Detector

FIG. 1 is a front, right, and top perspective view of a carbon monoxide detector showing our design. FIG. 2 is a back, left, and bottom perspective view thereof. FIG. 3 is a front view thereof. FIG. 4 is a back view thereof. FIG. 5 is a left view thereof. FIG. 6 is a right view thereof. FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines in the drawings illustrate portions of the carbon monoxide detector that form no part of the claimed design.