$49.99
First Alert SCO7CN Combination Smoke and Carbon Monoxide Detector with Voice and Location, Battery Operated , WhiteAmazon$53.05and up
Electrochemical Smoke and Carbon Monoxide DetectorWayfair & 1 more$37.99
First Alert Battery-Powered Ionization Smoke and Carbon Monoxide DetectorAce Hardware$38.99
First Alert Battery-Powered Electrochemical/Ionization Smoke and Carbon Monoxide DetectorAce Hardware$299.99and up
First Alert Hard-Wired w/Battery Back-up Photoelectric Smoke and Carbon Monoxide DetectorAce Hardware & 1 more$49.98and up
First Alert 10-Year Battery-operated Combination Smoke and Carbon Monoxide Detector with Voice Alert in White | 1046803Lowe's & 1 more$33.99and up
First Alert SA303CN3 Smoke and CO400 Carbon Monoxide Detector, Alarm Combo Pack, Battery PoweredAmazon & 1 more$39.99and up
First Alert Battery Powered Z-Wave Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm Base Station, 2nd GenerationAmazon & 3 more$39.98
First Alert BRK Battery-operated Combination Smoke and Carbon Monoxide Detector in White | 1046863Lowe's$86.57
FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack & Alert BRK 9120B-3 Hardwired Smoke Alarm with Backup Battery, 3 Pack, White, 3 CountAmazon$23.47and up
First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery , White, 1 PackAmazon & 1 moreSAVE $26.90
$41.09$67.99
First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup , WhiteAmazon$79.99and up
First Alert Z-Wave Plus Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector w/Wi-FiAce Hardware & 2 more$29.97
First Alert 10-Year Battery 2-Pack Battery-operated Combination Smoke and Carbon Monoxide Detector in White | 1046745Lowe'sSAVE $3.04
$38.95$41.99
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery BackupAmazonSAVE $2.90
$51.00$53.90
First Alert 2-in-1 Z-Wave Wireless Smoke Detector & Carbon Monoxide Alarm, Battery OperatedAmazon$85.30
First Alert BRK SC9120B (2 pack) Smoke & Carbon Monoxide Detector w/ Batt BackupNewegg