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CO1224TR - Honeywell System Sensor Hardwired Conventional 4-Wire 12/24-Volt Carbon Monoxide Detector (w/RealTest Technology)
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Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug In Wall, WiFi, Alexa Compatible Device, Voice & App Alerts - Amazon.com
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Kidde Code One Smoke & Carbon Monoxide Detector, Hardwired with AA Battery Backup & Voice Alarm 21027519 - The Home Depot
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First Alert 10-Year Battery-Operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
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