household fire alarm

home fire alarm and CO detector combo -- Wanlin Fire Protection, 12-year Chinese smart fire protection product manufacturer, WL-SFP200 (NB-IoT Smoke and CO Combination Detector) certified EN54/EN14604/EN50291/CE. NB-IoT + Dual Sensor (Smoke + Carbon Monoxide) + 10-Year Battery + EN14604/EN50291 + Voice. MOQ from 100 units, OEM/ODM from 500 units, 15-20 day d···