Photo 1 of ***STOCK PHOTO REFERENCE ONLY***Siterwell Detector, 10-Year Fire Alarm Smoke Detector with Built-in 3V Battery and Photoelectric Technology, Fire Detector with Low Battery Warning and Silence Function, UL217, GS508C, 4 Packs

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Photo 1 of ***STOCK PHOTO REFERENCE ONLY***Siterwell Detector, 10-Year Fire Alarm Smoke Detector with Built-in 3V Battery and Photoelectric Technology, Fire Detector with Low Battery Warning and Silence Function, UL217, GS508C, 4 PacksPhoto 2 of ***STOCK PHOTO REFERENCE ONLY***Siterwell Detector, 10-Year Fire Alarm Smoke Detector with Built-in 3V Battery and Photoelectric Technology, Fire Detector with Low Battery Warning and Silence Function, UL217, GS508C, 4 Packs