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How smoke detector is made - material, history, used, parts, components, steps, product, machine, History
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First Alert 10-Year Battery Hardwired Ionization Sensor Smoke Detector in the Smoke Detectors department at Lowes.com
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NEW Earykong Smoke Fire Detector Wireless 433MHz, Inside Photoelectronic Temperature Sensor, Security alarm 2 years warranty _ - AliExpress Mobile
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