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detection technology IoT fire monitoring fire protection solution China fire safety manufacturer global fire safety partner fire safety deployment warehouse IoT fire detection solution variant 26 fire alarm system source factory fire equipment fire safety engineering fire safety innovation certified fire detector OEM fire equipment commercial fire safety fire detection case fire safety R&D industrial fire protection fire safe fire safety R&D fire safety exporter city wide fire monitoring system partner variant 26 fire safety case study building fire protection CE approved fire safety EN54 ce automatic stove shut off medication reminder elderly assistive devices stove shut off device senior-friendly home automation aging in place elderly fall detection magnetic door contact dementia safety device gas stove safety device elderly protection system gas alarm for elderly automatic water shut off valve aging in place supplier fall detector wearable CE certified gas detector RoHS compliant 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