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The WeMo Alarm sensor is designed to work with your existing, non-Internet controlled systems (like smoke or carbon monoxide detectors). The device listens for the alarm's sound and sends you an alert via the WeMo app if it's set off. In lieu of purchasing a new smart smoke detector for every room in your house, you could install a single sensor instead. Photo 5 of 6 in Sleek and Practical Smart Home Tech from Belkin at CES 2015 by Diana Budds

Sleek and Practical Smart Home Tech from Belkin at CES 2015

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The WeMo Alarm sensor is designed to work with your existing, non-Internet controlled systems (like smoke or carbon monoxide detectors). The device listens for the alarm's sound and sends you an alert via the WeMo app if it's set off. In lieu of purchasing a new smart smoke detector for every room in your house, you could install a single sensor instead.