Franking machine:
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Jet printer
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Signal, interference, Modem connection
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Computer noise, Communication room
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Turn off the old monitor, Turn on
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Closes the CD / DVD tray, disc read, Opens
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Laser printer
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Signal read information, Computer interface
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Matrix printer
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Double click computer mouse
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Closing the laptop cover, Opening
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Environmental sounds, Office work, typewriter
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Computer mouse movement
★★★★★