Electronic melody for SMS alerts:
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Air cut, Fan blade rotation
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Air conditioning (outdoor unit)
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Spaceship freezer, defrost process
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Exhaust fan
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Popcorn machine
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SMS notification sound
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On, off, Air conditioning
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Hissing old tv
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Android notification sound
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Computer turning on, off, humming fan
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IPhone notification sound
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Vibration noise, Faulty air conditioning
★★★★★