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AEGISLINK Wi-Fi Combination Smoke and Carbon Monoxide Detector with LCD Display & Replaceable Battery, Compatible with TuyaSmart & Smart Life App, SC-WF240 - Amazon.com
First Alert 10-Year Battery Hardwired Smart Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Kidde Plug-In Smart Carbon Monoxide Detector & Indoor Air Quality Monitor with Battery Backup - Walmart.com
Google Nest Protect Battery Operated Smoke and Carbon Monoxide Detector - White | P.C. Richard & Son
Onelink 10 Year Smart Smoke and Carbon Monoxide Alarm - 1042136
Kitchen Use Heiman Wireless HS1CA-E Zigbee Carbon Monoxide Detector CO Gas Sensor Compatible with SmartThings Ziptao Gateway - AliExpress
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Google Hardwired Smart Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Smart Carbon Monoxide Detector, X-Sense Wi-Fi CO Detector, Real-Time Push Notifications via X-Sense Home Security App, Replaceable Battery, Optional 24/7 Professional Monitoring Service, XC04-WX - Amazon.com