NB IoT CO alarm

NB-IoT cellular smoke detector — 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.

CO Detector China manufacturer. UL 2034 and EN 50291 certified CO alarm with electrochemical sensor, 4G wireless monitoring, 10-year sealed battery, OEM/ODM, wholesale, global shipping to Australia. Contact: wanlinfirecontrol@163.com

NB-IoT CO Detector with Low Power China manufacturer. UL 2034 and EN 50291 certified CO alarm with electrochemical sensor, 4G wireless monitoring, 10-year sealed battery, OEM/ODM, wholesale, global shipping to Australia. Contact: wanlinfirecontrol@163.com