This Kidde RF-SM-DC smoke detector performs excellently in CR’s flaming ... One of the few plug-in CO detectors in our ...

The First Alert PRC710 uses a photoelectric sensor ... if the alarm goes off while you're not home. Backup power: Hardwired smoke detectors require a backup battery to power the unit in the ...

Unlock to see our ratings and compare products side by side The First Alert SMCO210 (Battery) is part of the Smoke & Carbon Monoxide Detectors test program at Consumer Reports. In our lab tests ...