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First Alert Brk Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
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Carbon Monoxide and Smoke Alarms, iFanze Sensitive Wireless Carbon Monoxide Alarm CO Detector with LCD Digital Display Plug-in Wall for Home Office Factory - Walmart.com
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SYSTEM SENSOR CO1224T 12/24 volt, 4-wire, system-monitored C02 carbon monoxide detector w/ RealTest Technology: Amazon.com: Tools & Home Improvement
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Amazon.com: Motteru Mini CO2 Detector with Alarm - Air Quality Monitor, Carbon Dioxide Detector Battery Powered with LED Digital Display and Sound Alert, Portable co2 Monitor, Air Quality Tester, CO Detector :
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Cheffort Handheld Carbon Monoxide Meter, Portable Carbon Monoxide Detector, Professional-Grade CO Gas Tester with LCD Backlit Display, 0-1000PPM Range for Industrial and Home (Battery Not Included) - Amazon.com
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