First Alert PRC710 PC1210 10-Year Combination Carbon Monoxide and Photoelectric
Sensor Type Photoelectric. Nuisance free photoelectric technology reduces false alarms that result from cooking and shower steam. Includes Carbon Monoxide Alarm along with the Smoke/Fire Detector all-in-one unit.
First Alert 9120B Smoke Detector Hardwired Alarm with Battery Backup 3-Pack
Power Source Battery Powered,Hardwired. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected.