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Piezo buzzer - cleaned
Optical smoke sensor
Optical smoke sensor
Optical smoke sensor
Smoke detector - PCB
Smoke detector - PCB
Piezo buzzer - oxidized
Smoke detector / alarm
Smoke detector - weak buzzer
1N4007 Diode
Trustworthy?
High-tech charge regulator
VW door-lock vacuum pump
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Ball switch
Some chip
Some chip
LM324 - single supply quad-opamp
What a mess!
End of Life
Replacement central-locking-sytem pump
Replacement central-locking-sytem pump
OP-70 precision opamp
7805
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Isolation slot
OPTO + TRIAC + SNUBBER
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