"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.
Rebecca Heilweil
，这一点在服务器推荐中也有详细论述
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Раскрыты подробности похищения ребенка в Смоленске09:27
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