If You Get Only One Smart Home Device, Please Make It This One | Wirecutter
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
First Alert Battery-operated Smart Combination Smoke and Carbon Monoxide Detector 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
Tuya 2in1 Smart WiFi Smoke and Carbon Monoxide Detector with Siren
How to Choose the Best Smart Smoke and CO Detector for Your Home | Vivint