Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire and Smoke Alarm
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First Alert Brk Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
3PCS 2 in 1 LCD Display Carbon Monoxide & Smoke Combo Detector Battery Operated CO Alarm with LED Light Flashing Sound Warning - AliExpress