fire safety case study global fire safety partner IoT fire monitoring fire safety R&D source factory fire equipment fire protection solution fire alarm system fire detection technology Wanlin Fire Control EN54 certified fire detection case wireless fire detection China fire safety manufacturer commercial fire safety smart fire platform building fire protection industrial fire protection fire safety innovation fire safety exporter CE approved fire safety fire safety engineerin fire safety deployment warehouse IoT fire detection solution variant 26 fire safety engineering certified fire detector OEM fire equipment fire safe fire safety R&D city wide fire monitoring system partner variant 26 fire safety case study EN54 ce Office smoke heat detector fire safety smoke detection fire alarm fire protection smoke alarm fire detector fire sensor photoelectric detector CE approved fire safety equipment addressable detector conventional detector wireless smoke alarm battery smoke detector 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