Plantower PMS7003

1

1

after unhinged metal covers with a plastic core. Here are parts of PMS7003. The metal covers are similar to clamp shell except they dovetail into the plastic board.

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2

fan to pull the air through the chamber where a laser diode (showing in a metal tube) pulses light across the airflow

3

3

a complete part of laser diode, photo-detector (photocell, in circle) and chamber to count particle

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4

the circuit showing the customized chip marked as Plantower

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5

close up to the main chip, Plantower PT-DSC0916. Here is another nice dissect

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6

the unit is packed up and still functional