Smoke Detector Teardown

ID: 23037

Description: For our reverse engineering project, we chose...

Steps:

  1. Use a screwdriver to pry open the plastic enclosure. It might be easier to push the buzzer through the hole, if you need extra leverage.
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  2. The buzzer is unhooked from the PCB board, by hands.
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  3. This is the circuit for the smoke detector. It is powered by a 9V battery. The 3 metal leafs are contacts for the buzzer and the bigger leaf is for the test button.
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  4. The metal cap is removed to reveal a, MC145017, driver chip and americium sensor. Do not remove americium from the sensor!
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