Computer interface, alarm:
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Opens, closes the CD / DVD tray
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Matrix printer
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General noise, Office work
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Turn on, turn off the hard drive
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Modem connection, interference, signal
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Turn on, turn off the old computer
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Floppy disk reading
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Jet printer
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Photocopy (photocopy)
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Signals, Computer interface
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Computer mouse movement
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Franking machine
★★★★★