fire system OTA upgrade 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 Sync.···
China module B plus D certification OEM factory - Wanlin Fire Safety Technology. Middle East market test smoke particle size supplier. CE FCC UL EN54 certified. MOQ 10 units. Contact +8613261677119