6-pack contractor pack combination carbon monoxide and smoke alarm. Can connect to other compatible BRK or First Alert CO and smoke detectors. Light indicates if the alarm is for smoke or for carbon monoxide. Single test/silence button for simple operation. Hardwired combination CO and smoke alarm features battery backup for constant monitoring.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.