Photo 1 of ***FACTORY SEALED***SITERLINK Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 4 Packs

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Photo 1 of ***FACTORY SEALED***SITERLINK Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 4 PacksPhoto 2 of ***FACTORY SEALED***SITERLINK Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 4 PacksPhoto 3 of ***FACTORY SEALED***SITERLINK Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 4 Packs