BRK® SC7010B Combination Smoke and Carbon Monoxide Alarm, Electrochemical/Photoelectric Sensor, (2) 1.5 VDC AA Batteries, Audible Alarm/LED Display, 85 dB

BRK® SC9120B Combination Smoke and Carbon Monoxide Detector Alarm, 120 V, 10 ft Detection, Electrochemical/Ionization Sensor, 9 VDC Alkaline Battery, Audible Alarm/LED Display, 85 dB

BRK® SC9120LBL Combination Wire-In Smoke and Carbon Monoxide Alarm, Dual Ionization/Electrochemical Sensor, 85 dB

First Alert 1040931 Safe & Sound Hardwired Smoke/CO Combo Alarm with Home Speaker & Embedded Alexa

Kidde® 21010408-N Combination Combination Carbon Monoxide and Smoke Alarm, Ionization Sensor, AC Hardwired/Sealed 3 V Lithium Battery Backup

Kidde® 21007624 Combination Tamper-Resistant Carbon Monoxide and Smoke Detector Alarm, 10 ft Detection, Electrochemical/Photoelectric Sensor, 120 VAC with 9 VDC Battery Backup, 85 dB

Kidde® 21006974 Combination Carbon Monoxide and Smoke Alarm, Electrochemical/Ionization Sensor, (2) AA Batteries, LED Display, 85 dB at 10 ft, UL Listed

Kidde® 21006377 Combination Smoke and Carbon Monoxide Detector Alarm, 120 VAC, 60 Hz, 45 mA Max/Alarm (2) AA Battery Backup, Flashing LED Display, 85 dB

Kidde® 21010071 Worry-Free Kitchen Carbon Monoxide Smoke Alarm, Electrochemical/Photoelectric Sensor, Sealed Lithium Battery, Audible Alarm/LED Display, 85 dB

Kidde® 21032250 Hardwired Smoke & Carbon Monoxide Alarm, Interconnectable with AA Battery Backup