Photo 1 of ** USED** Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector

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Photo 1 of ** USED** Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO DetectorPhoto 2 of ** USED** Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector