smoke detector and carbon dioxide detector

First Alert Alarm Smoke AC/DC with ADP SMI100-AC: Hardwired Smoke Detector, Fire Alarm, Lithium Battery, 10-Year Warranty

First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired

First Alert Alarm Combo DC Slim SMCO210 Clam Tray: Smoke & Carbon Monoxide Detector, Fire Alarm, Lithium Battery, White

First Alert Alarm Combo DC RFID SMCO500V Clam Tray: Smoke & Carbon Monoxide Detector, Battery Included, 10-Year Warranty

First Alert CO605 Plug-in Carbon Monoxide Detector with Battery Backup: 9-Volt Alkaline, No Hardwired Installation Needed

First Alert 2pk CO400CN2 Battery Powered Carbon Monoxide Detector: Best CO Detector, 9-Volt Alkaline Battery Included

First Alert Alarm Smoke DC Slim SM200: Battery-Operated Smoke Detector, 10-Year Warranty, White, Includes 2 AA Alkaline Batteries

First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display: 10-Year Warranty, Lithium Battery, White

First Alert CO400 Battery Powered Carbon Monoxide Detector: 9-Volt CO Alarm, Silences Unwanted Alarms, 7-Year Warranty

First Alert 2pk 10-Year Battery Photoelectric Smoke Alarm with Slim Profile

First Alert® Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400

First Alert® SMI100 Battery-Operated Smoke Alarm

First Alert Alarm Combo DC10 with VCE SMCO210V Clam Tray: Smoke & Carbon Monoxide Detector, Fire Alarm, 10-Year Warranty

First Alert 0827B 10-Year Battery Powered Smoke Alarm

First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup

First Alert Alarm Smoke DC10 SM210 Clam Tray: 10-Year Lithium Ion Battery, Fire Alarm, No Hardwired Installation Required

First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup

First Alert 8E Photo Micro Smoke Detector 10 Year Battery

First Alert Alarm Smoke DC10 SM210CO400: 10-Year Smoke & Carbon Monoxide Detector, Battery Operated, White, 2-Pack

First Alert Alarm Smoke DC10 with VCE SM210V Clam Tray: 10 Year Lithium Ion Battery, No Hardwired Installation Required

Airthings View Plus Radon and Indoor Air Quality Monitor

First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack

First Alert 9120B-AC BRK, Hardwire Interconnect Smoke Alarm with Battery Backup

Stalwart Rechargeable Natural Gas Detector Sniffer