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Fire Door Temperature Sensor China Manufacturer, 4G Wireless···
Fire Door Temperature ···
2026-07-15
Fire Door Temperature Sensor China manufacturer. UL 60930 and EN 16061 certified fire door alarm with real-time position monitoring, 4G wireless alert, fire door status tracking, OEM/ODM, wholesale, global shipping to Canada. Contact: wanlinfirecontrol@163.com
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4G alarm system, NB-IoT Heat Detector, WL-HD903, Wanlin Fire···
4G alarm system, NB-Io···
2026-07-10
4G alarm system direct from Wanlin Fire Protection — 12-year factory experience, WL-HD903 fully certified UL 521/EN 54-5/CE/FCC/RoHS/REACH. Key specs: NB-IoT (LTE Cat-NB1), Fixed Temperature Sensor + NB-IoT Low-Power Module, 5-year replaceable battery (2x AA lithium). MOQ 100 units, 25-30 working days, OEM/ODM custom branding available. Serving 60+ countries···