Maryland Statutes
Subtitle 11 - Carbon Monoxide Alarms
Section 12-1103 - Combination of Carbon Monoxide and Smoke Alarms

A carbon monoxide alarm may be combined with a smoke alarm if the combined device complies with:
        (1)    this subtitle;
        (2)    Title 9 of this article; and
        (3)    American National Standards Institute (ANSI)/Underwriters Laboratories (UL) standards 217 and 2034 or ANSI/UL 268 and 2075.