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Smoke alarm

US $1.8B Global $8B

A ceiling alarm that sounds when it detects smoke, required in most US dwellings. US assembly is 50% of supply (50% imported).

Polycarbonate: PolycarbonatePrinted circuit board: Printed circuit boardMicrocontroller: MicrocontrollerSensor: Photoelectric sensorPiezo speaker: Piezo speakerTest switch: Test switchPower: Alkaline core

Smoke alarm High · Import 50% $12 · Q60 46 Polycarbonate Medium · Import 45% $2.8K · Q60 54 − Natural gas Low · Import 0% $2.5M · Q50 3 Crude oil Medium · Import 31% $70M · Q50 26 Printed circuit boa… High · Import 90% $40 · Q70 76 − Copper High · Import 45% $9K · Q60 54 + Fiberglass cloth Medium · Import 56% $1.8K · Q55 61 + Epoxy resin Medium · Import 60% $2.2K · Q55 63 + Microcontroller Critical · Import 95% $4 · Q40 75 − Silicon wafer Critical · Import 83% $250 · Q80 59 + Chip packaging High · Import 90% $1 · Q70 58 + Photoelectric sensor High · Import 50% $3 · Q70 47 Sensor 1/2 − Silicon wafer Critical · Import 83% $250 · Q80 59 + Polycarbonate Medium · Import 45% $2.8K · Q60 54 + Piezo speaker Medium · Import 82% $1 · Q50 67 − Piezo ceramic Medium · Import 68% $8K · Q60 63 + Copper High · Import 45% $9K · Q60 54 + Test switch Medium · Import 49% $0 · Q55 50 − Polypropylene Medium · Import 22% $1.3K · Q50 42 + Copper High · Import 45% $9K · Q60 54 + Alkaline core Medium · Import 62% $0 · Q55 57 Power 1/2 − Zinc High · Import 22% $2.8K · Q50 38 + Manganese High · Import 100% $1.5K · Q50 70 + Steel Low · Import 20% $700 · Q55 38 +
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