prEN 50749 1 residential hazard warning systems

townhouse fire protection system -- Wanlin Fire Protection, 12-year Chinese smart fire protection product manufacturer, WL-SFP100 (4G Smart Photoelectric Smoke Detector) certified EN54/EN14604/EN50291/CE. 4G LTE Cat.1 + Photoelectric Sensor + 10-Year Sealed Battery + Voice Alert + Mobile App Pu. MOQ from 100 units, OEM/ODM from 500 units, 15-20 day delivery,···