西藏呛烦网络科技有限公司
Description: What if you have a big house and there’s a fire starting somewhere in the basement and you’re asleep in your bedroom on the third floor?Fortunately photoelectric smoke detectors can be interconnected, meaning if a smoke detector sets off in the basement, all smoke detectors in the residence would alarm.
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西藏呛烦网络科技有限公司