Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 9 - Fire Protection Systems
Section 916 - CARBON MONOXIDE PROTECTION
Subsection 916.2 - Primary Power to CO Alarms/Detectors
Current through Register 1531, September 27, 2024
Required carbon monoxide alarms, carbon monoxide detectors, combination smoke/carbon monoxide alarms or combination smoke/carbon monoxide detectors shall receive their power by one of the following means:
1. Listed carbon monoxide alarms shall receive their primary power from the building wiring when such wiring is served from a commercial source and without a disconnecting switch other than those required for overcurrent protection. Listed carbon monoxide alarms that are only battery-powered, plug-in or plug-in with battery backup shall not be permitted in new construction.
2. Listed carbon monoxide detectors shall receive their power from the approved control panel. The approved control panel shall receive its primary power from the building wiring when such wiring is served form a commercial source and without a disconnecting switch other than those required for overcurrent protection.
3. Listed low-power radio frequency (wireless) detectors shall be permitted to be battery powered when the battery is electrically supervised and shall be capable of sending an alarm signal to the approved control panel for a minimum of seven days after sending the initial battery depletion signal.