Smoke and CO alarms

Sensor, power, and the maker's UL wording.

White smoke and carbon monoxide alarm on a nursery ceiling above a felt star garland

36models tracked

	Mount or type	Fits
First Alert 10-Year Battery Photoelectric Smoke Alarm, Slim Profile	smoke	–	–
First Alert CO400 Battery Carbon Monoxide Alarm	CO	–	–
First Alert CO605 Plug-in Carbon Monoxide Alarm	CO	–	–
First Alert CO710 Carbon Monoxide Alarm with Digital Temperature Display	CO	–	–
First Alert SC5 Smart Smoke & CO	combo	–	–
First Alert SM210 / SM210V / SM210L 10-Year Smoke	smoke	–	–
First Alert SMCO100 / SMCO200V Combo	combo	–	–
First Alert SMCO210 / SMCO210V Combo	combo	–	–
First Alert SMCO500V Combo	combo	–	–
First Alert SMI100-AC Hardwired Smoke	smoke	–	–
First Alert SMICO100-AC Hardwired Combo	combo	–	–
Kidde 20SA10 Hardwired Smoke Alarm with 10-Year Backup	smoke	–	–
Kidde 20SAR Hardwired Smoke Alarm with AA Backup	smoke	–	–
Kidde 20SAR-W Smart Smoke Alarm	smoke	–	–
Kidde 20SD10 / 20SD10-V 10-Year Battery Smoke Alarm	smoke	–	–
Kidde 20SDR AA Battery Smoke Alarm	smoke	–	–
Kidde 20SDR-VRF Wire-Free Interconnect Smoke Alarm	smoke	–	–
Kidde 30CUAR / 30CUA10 Hardwired Combo	combo	–	–
Kidde 30CUAR-W Smart Smoke + CO Alarm	combo	–	–
Kidde 30CUD10 / 30CUD10-V 10-Year Combo	combo	–	–
Kidde 30CUDR Combo	combo	–	–
Kidde 30CUDR-VRF Wire-Free Interconnect Smoke + CO Alarm	combo	–	–
Kidde 50CUA10-S Smoke + CO Alarm with Strobe	combo	–	–
Kidde Ring Smart Smoke + CO Alarm RGCUAR-RW	combo	–	–
Kidde Ring Smart Smoke Alarm RGSAR-RW	smoke	–	–
Ring Alarm Smoke & CO Listener	listener	–	–
X-Sense SC07-W Wireless Interconnected Smoke and CO Alarm	combo	–	–
X-Sense SC07-WX Smart Smoke and CO Alarm	combo	–	–
X-Sense SK0Z-3S Interconnected Smart Smoke Alarm	smoke	–	–
X-Sense Smoke Alarms (SD2L0AX, SD19-W)	smoke	–	–
X-Sense XC01-R Standalone Carbon Monoxide Alarm	CO	–	–
X-Sense XC0M-iR Smart Carbon Monoxide Alarm with Voice	CO	–	–
X-Sense XP0A-MR Interconnected Smart Smoke and CO Alarm with Voice	combo	–	–
X-Sense XP0J-SA Hardwired Smoke and CO Alarm with Voice	combo	–	–
X-Sense XS0B-iR Smart Smoke Alarm with Voice	smoke	–	–
First Alert 9120BDiscontinued	smoke	–	–

Smoke, CO, or both

Smoke and CO alarms

All 36 smoke and CO alarms

Smoke, CO, or both

Smoke only (14)

Carbon monoxide (CO) only (5)

Smoke and CO combo (16)

Sealed or 10-year battery, per the maker (11)

Interconnected (wired or wireless) (20)

Most-compared pairs

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