Photo 1 of Detector, 10-Year Smoke Alarm with Photoelectric Sensor and Built-in 3V Lithum Battery, Fire Alarm with Test Button and Low Battery Warning, Fire Safety for Home,1 Pack

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Photo 1 of Detector, 10-Year Smoke Alarm with Photoelectric Sensor and Built-in 3V Lithum Battery, Fire Alarm with Test Button and Low Battery Warning, Fire Safety for Home,1 PackPhoto 2 of Detector, 10-Year Smoke Alarm with Photoelectric Sensor and Built-in 3V Lithum Battery, Fire Alarm with Test Button and Low Battery Warning, Fire Safety for Home,1 Pack