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4G gas alarm, NB-IoT Carbon Monoxide Detector, WL-CO801, Wan···
4G gas alarm, NB-IoT C···
2026-08-17
4G gas alarm — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-CO801 (NB-IoT Carbon Monoxide Detector) certified UL/CE/EN54. Electrochemical CO + NB-IoT + Ultra-Low Power + 10-Year Battery + Cloud. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands.