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tech_review 00046.txt

#Internet-Connected Battery Could Bring Smoke alarms Online A startup has come up with a simple way to make smoke and carbon-monoxide detectors more useful: a nine-volt battery with built-in Wi-fi. The battery can alert you on your smartphone if the alarm goes off or the battery itself is about to die. Roost the Sunnyvale California-based company behind the battery plans to sell the batteries starting next year for $25 to $35. We were approaching the Internet-of-things space not from a perspective of##How can we build a whizzy new device that does something? but##What information do you have in the house that s useful to you that you d like access to when you re not home? says cofounder and chief technology officer James Blackwell. The idea could reach beyond alarms. Roost has its sights set on other devices battery-powered and not that are excluded currently from the growing throng of connected gadgets. Roost s first batteries which are based lithium and meant to last for more than five years contain a Wi-fi chip and sensors for audio detection and voltage monitoring. To get one working with a smoke alarm you d set it up with a forthcoming Roost smartphone app. Using the app you can give a battery a name (like living room or kids bedroom) and connect it to your home Wi-fi and then insert it in the battery compartment of the alarm. Right now Roost has a working prototype in a plastic box about the size of an external hard drive; Blackwell expects a battery-sized version to be ready in the spring. Roost plans to go beyond the nine-volt battery in the future##Blackwell says the company is thinking about AA BATTERIES since they re commonly used in toys and remote controls. He s also thinking about adding other sensors such as an accelerometer or thermometer to the battery o

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