humidity compensated CO alarm

home gas detector with alarm 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 lifespan), AC powered + 72h backup battery. MOQ 100 units, 25-30 working days, OEM/ODM custom branding available. Serving 60+ countries a···