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<http://webisa.webdatacommons.org/252221691>	<http://www.w3.org/ns/prov#value>	"This alarm... ... more Product Info First Alert Sa320cn Dual Sensor Battery-powered Smoke And Fire Alarm NEW - First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm, Free Shipping Product Description While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires." .
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