Фото: Кристина Кормилицына / Фотохост-агентство РИА Новости
"Our internet-connected devices use a proprietary radio system, which links the alarms together," says Nick Rutter, co-founder and chief executive of FireAngel. The connected alarms can send push notifications to users' phones via their home internet router.，推荐阅读safew官方版本下载获取更多信息
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