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protection smart fire platform fire protection soluti water flood sensor export fire equipment source factory EN14604 smoke alarm gas valve shutoff ODM fire alarm 4G fire detector gas leak d 24V smoke heat detector B2B elderly monitoring anti-dry cooking device elderly care devices senior wellness technology panic button for elderly water leak detector door sensor alarm elderly care wholesale shower pull cord alarm home automation controller dementia safety device senior safety OEM UL listed smoke alarm interconnected smoke alarm OEM home security sensors Life Alert System apartment alarm system elderly fall detection WiFi smoke detector flood detection system water leak sensor stove shut off device property safety monitoring wireless alarm system 10 year battery smoke alarm senior safety alarm panic button pendant medical alert pendant basement water sensor LP gas alarm Zigbee smoke detector 24/7 monitoring alarm home fire export smoke detector wholesale gas leak CE and EN 54 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