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	Heiman NB IOT Smoke detector Test (李嫦庆) View
	HEIMAN 633 NB IOT smoke alarm testing video (Johnny) View
	HEIMAN 633 NB IOT smoke alarm testing video (Carol Mao) View
	heiman company presentation (Carol Mao) View
	A video of this Heiman HS1SA Photoelectric Smoke Alarm (Hobby Productions) View
	Heiman co alarm compared to others-1 (Johnny) View
	Heiman co alarm compared to others-3 (Johnny) View
	IOT Based Smart Smoke Alarm System (MismatchVlogs) View
	photonMaster interfaced to First Alert Smoke Detector (D Thompson) View
	NB-IoT Smart Meter (MUInnO) View