Smoke Detectors and Fire Alarms Fire Safety, First Alert, Safety & Security, Tools & Home Improvement First Alert Atom Micro Photoelectric Smoke and Fire Alarm P1000 Review by CheatingMutant July 15, 2018 No Comments This fits your . Make sure this fits by entering your model number. – Sensor Type: Photoelectric › See more product details First Alert Atom Micro Photoelectric Smoke and Fire Alarm P1000