Photo 1 of ** USED MISSING PARTS** Firex Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup

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Photo 1 of ** USED MISSING PARTS** Firex Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup Photo 2 of ** USED MISSING PARTS** Firex Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup Photo 3 of ** USED MISSING PARTS** Firex Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup