Smoke alarms that trigger each other
Posted 11.08.2005 at 2:00 am
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hmtechAlarm_485.jpg
When an alarm in one part of the house senses smoke or carbon monoxide, it sets off its own 85-decibel siren and every other alarm's too, communicating over a wireless 915-megahertz radio network. The alarms also announce the location of the fire or CO leak. $80 per alarm
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