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First Alert smoke detector alternative

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cathedral smoke alarm, WiFi Smart Photoelectric Smoke Detector, WL-SM603, Wanlin, Nairobi, smart fir 2026-08-17
cathedral smoke alarm — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-SM603 (WiFi Smart Photoelectric Smoke Detector) certified UL/CE/EN54. Photoelectric + WiFi 6 + App Control + Voice Alert + 10-Year Battery. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands.