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long battery life 4G CO alarm
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IoT CO sensor, 4G Wireless Carbon Monoxide Alarm, WL-CO800, ···
IoT CO sensor, 4G Wire···
2026-07-14
IoT CO sensor direct from Wanlin Fire Protection — 12-year factory experience, WL-CO800 fully certified UL 2034/EN 50291/CE/FCC/RoHS/REACH. Key specs: 4G LTE Cat.1 + WiFi, Electrochemical CO Sensor (10-year life), 10-year sealed lithium battery (non-replaceable). MOQ 100 units, 25-30 working days, OEM/ODM custom branding available. Serving 60+ countries acr···