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smart park fire safety
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UL 521 heat detector standard, Smart Multi-Sensor Fire Detec···
UL 521 heat detector s···
2026-07-25
UL 521 heat detector standard direct from Wanlin Fire Protection — 12-year factory experience, WL-SF800 smart fire protection product certified CE/EN54/UL/NFPA 72/FCC/RoHS/REACH/ISO 9001. Key specs: Photoelectric Smoke + Electrochemical CO + Thermistor Heat + AI Multi-Sensor Fusion, Addressable Loop + 4G Option + Drift Compensation + Self-Diagnostic + Cloud···