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smoke detector with ultrasonic sensor
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fire detector for college campus, 4G Smart Heat Detector, WL···
fire detector for coll···
2026-07-22
fire detector for college campus direct from Wanlin Fire Protection — 12-year factory experience, WL-HD900 4G smart fire protection product certified CE/FCC/RoHS/REACH/ISO9001. Key specs: 4G LTE + Thermistor Fixed Temperature & Rate-of-Rise, 4G LTE + SMS + Push + Phone Call + App Alert. No monthly fees, 4G cellular backup, cloud platform, DIY installation. ···