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TV stick Google Assistant smart fire platform university campus fire protection deployment China fire equipment supplier g Technology & Hardware solution Android TV stick Amlogic S905X4 fire safety R&D school fire safety solution case study fire sa smoke detector wholesale UL smo ISO9001 fire sensor smoke detection fire alarm smoke alarm fire detector fire sensor photoelectric detector CE approved fire safety equipment addressable detector conventional detector wireless smoke alarm battery smoke detector hardwired detector OEM smoke detector wholesale fire alarm fire detection system smart fire alarm IoT fire safety commercial fire protection industrial smoke detector Philippine smoke tester demand Indian smoke detector tester BIS Middle East distributor Dual sensor smoke detector fire detection case smart home fire detection deployment global f OEM pressure transmitter wireless pressure gauge gas pressure monitoring NB-IoT pressure sensor remote pressure monitoring China pressure 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